diff --git a/wp-admin/js/customize-controls.js b/wp-admin/js/customize-controls.js
index 91f5af1353..a23a130c0b 100644
--- a/wp-admin/js/customize-controls.js
+++ b/wp-admin/js/customize-controls.js
@@ -3333,7 +3333,7 @@
 		 * @param {object} attachment
 		 */
 		setImageFromAttachment: function( attachment ) {
-			var sizes = [ 'site_icon-32', 'thumbnail', 'full' ],
+			var sizes = [ 'site_icon-32', 'thumbnail', 'full' ], link,
 				icon;
 
 			_.each( sizes, function( size ) {
@@ -3347,8 +3347,13 @@
 			// Set the Customizer setting; the callback takes care of rendering.
 			this.setting( attachment.id );
 
+			if ( ! icon ) {
+				return;
+			}
+
 			// Update the icon in-browser.
-			$( 'link[sizes="32x32"]' ).attr( 'href', icon.url );
+			link = $( 'link[rel="icon"][sizes="32x32"]' );
+			link.attr( 'href', icon.url );
 		},
 
 		/**
@@ -3365,7 +3370,7 @@
 			this.params.attachment = {};
 			this.setting( '' );
 			this.renderContent(); // Not bound to setting change when emptying.
-			$( 'link[rel="icon"]' ).attr( 'href', '' );
+			$( 'link[rel="icon"][sizes="32x32"]' ).attr( 'href', '/favicon.ico' ); // Set to default.
 		}
 	});
 
diff --git a/wp-admin/js/customize-controls.min.js b/wp-admin/js/customize-controls.min.js
index ef5e903a3f..d05e4403a5 100644
--- a/wp-admin/js/customize-controls.min.js
+++ b/wp-admin/js/customize-controls.min.js
@@ -1,3 +1,3 @@
 !function(a,b){var c,d,e,f=wp.customize;f.Setting=f.Value.extend({initialize:function(a,b,c){var d=this;f.Value.prototype.initialize.call(d,b,c),d.id=a,d.transport=d.transport||"refresh",d._dirty=c.dirty||!1,d.notifications=new f.Values({defaultConstructor:f.Notification}),d.bind(d.preview)},preview:function(){var a,b=this;return a=b.transport,"postMessage"!==a||f.state("previewerAlive").get()||(a="refresh"),"postMessage"===a?b.previewer.send("setting",[b.id,b()]):"refresh"===a?b.previewer.refresh():void 0},findControls:function(){var a=this,b=[];return f.control.each(function(c){_.each(c.settings,function(d){d.id===a.id&&b.push(c)})}),b}}),f._latestRevision=0,f._lastSavedRevision=0,f._latestSettingRevisions={},f.bind("change",function(a){f._latestRevision+=1,f._latestSettingRevisions[a.id]=f._latestRevision}),f.bind("ready",function(){f.bind("add",function(a){a._dirty&&(f._latestRevision+=1,f._latestSettingRevisions[a.id]=f._latestRevision)})}),f.dirtyValues=function(a){var b={};return f.each(function(c){var d;c._dirty&&(d=f._latestSettingRevisions[c.id],a&&a.unsaved&&(_.isUndefined(d)||d<=f._lastSavedRevision)||(b[c.id]=c.get()))}),b},f.requestChangesetUpdate=function(a){var c,d,e,g={};return c=new b.Deferred,a&&_.extend(g,a),_.each(f.dirtyValues({unsaved:!0}),function(b,c){a&&null===a[c]||(g[c]=_.extend({},g[c]||{},{value:b}))}),_.isEmpty(g)?(c.resolve({}),c.promise()):(f.state("processing").set(f.state("processing").get()+1),c.always(function(){f.state("processing").set(f.state("processing").get()-1)}),f.trigger("changeset-save",g),e=f.previewer.query({excludeCustomizedSaved:!0}),delete e.customized,_.extend(e,{nonce:f.settings.nonce.save,customize_theme:f.settings.theme.stylesheet,customize_changeset_data:JSON.stringify(g)}),d=wp.ajax.post("customize_save",e),d.done(function(a){var b={};f._lastSavedRevision=Math.max(f._latestRevision,f._lastSavedRevision),f.state("changesetStatus").set(a.changeset_status),c.resolve(a),f.trigger("changeset-saved",a),a.setting_validities&&_.each(a.setting_validities,function(a,c){!0===a&&_.isObject(g[c])&&!_.isUndefined(g[c].value)&&(b[c]=g[c].value)}),f.previewer.send("changeset-saved",_.extend({},a,{saved_changeset_values:b}))}),d.fail(function(a){c.reject(a),f.trigger("changeset-error",a)}),d.always(function(a){a.setting_validities&&f._handleSettingValidities({settingValidities:a.setting_validities})}),c.promise())},f.utils.bubbleChildValueChanges=function(a,c){b.each(c,function(b,c){a[c].bind(function(b,c){a.parent&&b!==c&&a.parent.trigger("change",a)})})},d=function(a){var b,c,d,e;b=this,a=a||{},d=function(){var a;a=(b.extended(f.Panel)||b.extended(f.Section))&&b.expanded&&b.expanded()?b.contentContainer:b.container,e=a.find(".control-focus:first"),0===e.length&&(e=a.find("input, select, textarea, button, object, a[href], [tabindex]").filter(":visible").first()),e.focus()},a.completeCallback?(c=a.completeCallback,a.completeCallback=function(){d(),c()}):a.completeCallback=d,f.state("paneVisible").set(!0),b.expand?b.expand(a):a.completeCallback()},f.utils.prioritySort=function(a,b){return a.priority()===b.priority()&&"number"==typeof a.params.instanceNumber&&"number"==typeof b.params.instanceNumber?a.params.instanceNumber-b.params.instanceNumber:a.priority()-b.priority()},f.utils.isKeydownButNotEnterEvent=function(a){return"keydown"===a.type&&13!==a.which},f.utils.areElementListsEqual=function(a,c){var d=a.length===c.length&&-1===_.indexOf(_.map(_.zip(a,c),function(a){return b(a[0]).is(a[1])}),!1);return d},e=function(){var a,b,c;return a=document.createElement("div"),b={transition:"transitionend",OTransition:"oTransitionEnd",MozTransition:"transitionend",WebkitTransition:"webkitTransitionEnd"},c=_.find(_.keys(b),function(b){return!_.isUndefined(a.style[b])}),c?b[c]:null}(),c=f.Class.extend({defaultActiveArguments:{duration:"fast",completeCallback:b.noop},defaultExpandedArguments:{duration:"fast",completeCallback:b.noop},containerType:"container",defaults:{title:"",description:"",priority:100,type:"default",content:null,active:!0,instanceNumber:null},initialize:function(a,c){var d=this;d.id=a,c=c||{},c.params=_.defaults(c.params||{},d.defaults),b.extend(d,c),d.templateSelector="customize-"+d.containerType+"-"+d.params.type,d.container=b(d.params.content),0===d.container.length&&(d.container=b(d.getContainer())),d.headContainer=d.container,d.contentContainer=d.getContent(),d.container=d.container.add(d.contentContainer),d.deferred={embedded:new b.Deferred},d.priority=new f.Value,d.active=new 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c.unchanged?void(c.completeCallback&&c.completeCallback()):(d="resolved"===f.previewer.deferred.active.state()?c.duration:0,g.extended(f.Panel)&&(f.panel.each(function(a){a!==g&&a.expanded()&&(e=a,d=0)}),a||_.each(g.sections(),function(a){a.collapse({duration:0})})),void(b.contains(document,h)?a?h.stop(!0,!0).slideDown(d,c.completeCallback):g.expanded()?g.collapse({duration:d,completeCallback:function(){h.stop(!0,!0).slideUp(d,c.completeCallback)}}):h.stop(!0,!0).slideUp(d,c.completeCallback):(h.toggle(a),c.completeCallback&&c.completeCallback())))},_toggleActive:function(a,b){var c=this;return b=b||{},a&&this.active.get()||!a&&!this.active.get()?(b.unchanged=!0,c.onChangeActive(c.active.get(),b),!1):(b.unchanged=!1,this.activeArgumentsQueue.push(b),this.active.set(a),!0)},activate:function(a){return this._toggleActive(!0,a)},deactivate:function(a){return this._toggleActive(!1,a)},onChangeExpanded:function(){throw new Error("Must override with 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e=this;c.prototype.initialize.call(e,a,d),e.id=a,e.panel=new f.Value,e.panel.bind(function(a){b(e.headContainer).toggleClass("control-subsection",!!a)}),e.panel.set(e.params.panel||""),f.utils.bubbleChildValueChanges(e,["panel"]),e.embed(),e.deferred.embedded.done(function(){e.ready()})},embed:function(){var a,c=this,d=b("#customize-theme-controls");a=function(a){var e;a?f.panel(a,function(a){a.deferred.embedded.done(function(){e=a.contentContainer,c.headContainer.parent().is(e)||e.append(c.headContainer),c.contentContainer.parent().is(c.headContainer)||d.append(c.contentContainer),c.deferred.embedded.resolve()})}):(e=b(".customize-pane-parent"),c.headContainer.parent().is(e)||e.append(c.headContainer),c.contentContainer.parent().is(c.headContainer)||d.append(c.contentContainer),c.deferred.embedded.resolve())},c.panel.bind(a),a(c.panel.get())},attachEvents:function(){var a,b,c=this;c.container.hasClass("cannot-expand")||(c.container.find(".accordion-section-title, 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d,e=this,g=e.headContainer.closest(".wp-full-overlay-sidebar-content"),h=e.contentContainer,i=e.headContainer.closest(".wp-full-overlay"),j=h.find(".customize-section-back"),k=e.headContainer.find(".accordion-section-title").first();a&&!h.hasClass("open")?(d=c.unchanged?c.completeCallback:b.proxy(function(){e._animateChangeExpanded(function(){k.attr("tabindex","-1"),j.attr("tabindex","0"),j.focus(),h.css("top",""),g.scrollTop(0),c.completeCallback&&c.completeCallback()}),h.addClass("open"),i.addClass("section-open"),f.state("expandedSection").set(e)},this),c.allowMultiple||f.section.each(function(a){a!==e&&a.collapse({duration:c.duration})}),e.panel()?f.panel(e.panel()).expand({duration:c.duration,completeCallback:d}):(f.panel.each(function(a){a.collapse()}),d())):!a&&h.hasClass("open")?(e._animateChangeExpanded(function(){j.attr("tabindex","-1"),k.attr("tabindex","0"),k.focus(),h.css("top",""),c.completeCallback&&c.completeCallback()}),h.removeClass("open"),i.removeClass("section-open"),e===f.state("expandedSection").get()&&f.state("expandedSection").set(!1)):c.completeCallback&&c.completeCallback()}}),f.ThemesSection=f.Section.extend({currentTheme:"",overlay:"",template:"",screenshotQueue:null,$window:b(window),loaded:0,loading:!1,fullyLoaded:!1,term:"",filterContainer:b(),embed:function(){var 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a,b,c,d=this;if(!d.loading){if(b=Math.ceil(d.loaded/100)+1,a={"switch-themes-nonce":f.settings.nonce["switch-themes"],wp_customize:"on",theme_action:d.params.action,customized_theme:f.settings.theme.stylesheet,page:b},"search"===d.params.action){if(""===d.term)return;a.search=d.term}else if("favorites"===d.params.action){if(""===d.term)return;a.user=d.term}else if("feature_filter"===d.params.action){if(""===d.term)return;a.tags=d.term}d.headContainer.closest(".wp-full-overlay").addClass("loading"),d.loading=!0,d.container.find(".no-themes").hide(),c=wp.ajax.post("customize-load-themes",a),c.done(function(a){var c,e,g=a.themes;0!==g.length?(e=[],_.each(g,function(a){var b=d.params.action+"_theme_"+a.id;c=new f.controlConstructor.theme(b,{params:{type:"theme",content:'<li id="customize-control-theme-'+d.params.action+"_"+a.id+'" class="customize-control 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a=this,c=a.container.find(".filter-group").find(":checkbox"),d=[];return"feature_filter"!==a.params.action?!1:(_.each(c.filter(":checked"),function(a){d.push(b(a).prop("value"))}),void(0===d.length?a.term="":a.term=d))},renderScreenshots:function(){var a=this;null!==a.screenshotQueue&&0!==a.screenshotQueue.length||(a.screenshotQueue=_.filter(a.controls(),function(a){return!a.screenshotRendered})),a.screenshotQueue.length&&(a.screenshotQueue=_.filter(a.screenshotQueue,function(b){var c=b.container.find(".theme-screenshot"),d=c.find("img");if(!d.length)return!1;if(d.is(":hidden"))return!0;var e=a.$window.scrollTop(),f=e+a.$window.height(),g=d.offset().top,h=c.height(),i=g+h,j=3*h,k=i>=e-j&&f+j>=g;return k&&b.container.trigger("render-screenshot"),!k}))},updateCount:function(a){a||(a=this.loaded);var b=this.container.closest(".control-panel-content").find(".themes-displayed"),c=this.container.closest(".control-panel-content").find(".theme-count");0===a?c.text(a):(b.fadeOut(180,function(){c.text(a),b.fadeIn(180)}),wp.a11y.speak(f.settings.l10n.announceThemeCount.replace("%d",a)))},nextTheme:function(){var a=this;a.getNextTheme()&&a.showDetails(a.getNextTheme(),function(){a.overlay.find(".right").focus()})},getNextTheme:function(){var a,b,c=this;return a=f.control(c.params.action+"_theme_"+this.currentTheme),b=a.container.next("li.customize-control-theme"),b.length?(b=b[0].id.replace("customize-control-theme-"+c.params.action,c.params.action+"_theme"),a=f.control(b),a.params.theme):!1},previousTheme:function(){var a=this;a.getPreviousTheme()&&a.showDetails(a.getPreviousTheme(),function(){a.overlay.find(".left").focus()})},getPreviousTheme:function(){var a,b,c=this;return a=f.control(c.params.action+"_theme_"+this.currentTheme),b=a.container.prev("li.customize-control-theme"),b.length?(b=b[0].id.replace("customize-control-theme-"+c.params.action,c.params.action+"_theme"),a=f.control(b),a.params.theme):!1},updateLimits:function(){this.getNextTheme()||this.overlay.find(".right").addClass("disabled"),this.getPreviousTheme()||this.overlay.find(".left").addClass("disabled")},showDetails:function(a,c){var d=this;c=c||function(){},d.currentTheme=a.id,d.overlay.html(d.template(a)).fadeIn("fast").focus(),b("body").addClass("modal-open"),d.containFocus(d.overlay),d.updateLimits(),wp.a11y.speak(f.settings.l10n.announceThemeDetails.replace("%s",a.name)),c()},closeDetails:function(){b("body").removeClass("modal-open"),this.overlay.fadeOut("fast"),f.control(this.params.action+"_theme_"+this.currentTheme).container.find(".theme").focus()},containFocus:function(a){var c;a.on("keydown",function(d){return 9===d.keyCode?(c=b(":tabbable",a),c.last()[0]!==d.target||d.shiftKey?c.first()[0]===d.target&&d.shiftKey?(c.last().focus(),!1):void 0:(c.first().focus(),!1)):void 0})}}),f.Panel=c.extend({containerType:"panel",initialize:function(a,b){var d=this;c.prototype.initialize.call(d,a,b),d.embed(),d.deferred.embedded.done(function(){d.ready()})},embed:function(){var a=this,c=b("#customize-theme-controls"),d=b(".customize-pane-parent");a.headContainer.parent().is(d)||d.append(a.headContainer),a.contentContainer.parent().is(a.headContainer)||c.append(a.contentContainer),a.renderContent(),a.deferred.embedded.resolve()},attachEvents:function(){var a,c=this;c.headContainer.find(".accordion-section-title").on("click keydown",function(a){f.utils.isKeydownButNotEnterEvent(a)||(a.preventDefault(),c.expanded()||c.expand())}),c.container.find(".customize-panel-back").on("click 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c=this,d=c.contentContainer,e=d.closest(".wp-full-overlay"),g=d.closest(".wp-full-overlay-sidebar-content"),h=c.headContainer.find(".accordion-section-title"),i=d.find(".customize-panel-back");a&&!d.hasClass("current-panel")?(f.section.each(function(a){c.id!==a.panel()&&a.collapse({duration:0})}),f.panel.each(function(a){c!==a&&a.collapse({duration:0})}),c._animateChangeExpanded(function(){h.attr("tabindex","-1"),i.attr("tabindex","0"),i.focus(),d.css("top",""),g.scrollTop(0),b.completeCallback&&b.completeCallback()}),e.addClass("in-sub-panel"),d.addClass("current-panel"),f.state("expandedPanel").set(c)):!a&&d.hasClass("current-panel")&&(c._animateChangeExpanded(function(){h.attr("tabindex","0"),i.attr("tabindex","-1"),h.focus(),d.css("top",""),b.completeCallback&&b.completeCallback()}),e.removeClass("in-sub-panel"),d.removeClass("current-panel"),c===f.state("expandedPanel").get()&&f.state("expandedPanel").set(!1))},renderContent:function(){var a,c=this;a=0!==b("#tmpl-"+c.templateSelector+"-content").length?wp.template(c.templateSelector+"-content"):wp.template("customize-panel-default-content"),a&&c.headContainer&&c.contentContainer.html(a(c.params))}}),f.ThemesPanel=f.Panel.extend({installingThemes:[],attachEvents:function(){var a=this;f.Panel.prototype.attachEvents.apply(this),a.contentContainer.on("click",".customize-theme",function(){a.collapse()}),a.contentContainer.on("click",".see-themes, .filter-themes",function(){b(".wp-full-overlay").toggleClass("showing-themes")}),a.contentContainer.on("click",".theme-install",function(b){a.installTheme(b)}),a.contentContainer.on("click",".update-theme, #update-theme",function(b){b.preventDefault(),b.stopPropagation(),a.updateTheme(b)}),a.contentContainer.on("click",".delete-theme",function(b){a.deleteTheme(b)}),_.bindAll(this,"installTheme","updateTheme")},onChangeExpanded:function(a,b){if(f.Panel.prototype.onChangeExpanded.apply(this,[a,b]),b.unchanged)return void(b.completeCallback&&b.completeCallback());var c=this,d=c.headContainer.closest(".wp-full-overlay");a?(d.addClass("in-themes-panel").addClass("showing-themes").delay(200).find(".customize-themes-full-container").addClass("animate"),f.section("installed_themes").expand()):d.removeClass("in-themes-panel").find(".customize-themes-full-container").removeClass("animate")},installTheme:function(a){var c=this,d=!1,e=b(a.target).data("slug");-1===b.inArray(this.installingThemes,e)&&(wp.updates.maybeRequestFilesystemCredentials(a),b(document).one("wp-theme-install-success",function(a,g){var h,i,j=!1;if(d)c.loadThemePreview(e).fail(function(){b(".wp-full-overlay").removeClass("customize-loading")});else{if(f.control.each(function(a){"theme"===a.params.type&&a.params.theme.id===g.slug&&(j=a.params.theme,a.rerenderAsInstalled(!0))}),!j||"undefined"!=typeof f.control("installed_theme_"+j.id))return;j.type="installed",h="installed_theme_"+j.id,i=new f.controlConstructor.theme(h,{params:{type:"theme",content:b('<li class="customize-control customize-control-theme"></li>').attr("id","customize-control-theme-installed_"+j.id).prop("outerHTML"),section:"installed_themes",active:!0,theme:j,priority:0},previewer:f.previewer}),f.control.add(h,i),f.control(h).container.trigger("render-screenshot"),f.section.each(function(a){"themes"===a.params.type&&j.id===a.currentTheme&&a.closeDetails()})}}),this.installingThemes.push(b(a.target).data("slug")),wp.updates.installTheme({slug:e}),b(a.target).hasClass("preview")&&(d=!0,b(".wp-full-overlay").addClass("customize-loading")))},loadThemePreview:function(a){var c,d,e,g=b.Deferred();return e=document.createElement("a"),e.href=location.href,e.search=b.param(_.extend(f.utils.parseQueryString(e.search.substr(1)),{theme:a,changeset_uuid:f.settings.changeset.uuid})),d=b(".wp-full-overlay"),d.addClass("customize-loading"),c=function(){var a;f.state("processing").get()>0||(f.state("processing").unbind(c),a=f.requestChangesetUpdate(),a.done(function(){b(window).off("beforeunload.customize-confirm"),window.location.href=e.href}),a.fail(function(){d.removeClass("customize-loading")}))},0===f.state("processing").get()?c():f.state("processing").bind(c),g.promise()},updateTheme:function(a){wp.updates.maybeRequestFilesystemCredentials(a),b(document).one("wp-theme-update-success",function(a,b){f.control.each(function(a){"theme"===a.params.type&&a.params.theme.id===b.slug&&(a.params.theme.hasUpdate=!1,a.rerenderAsInstalled(!0))})}),wp.updates.updateTheme({slug:b(a.target).closest(".notice").data("slug")})},deleteTheme:function(a){var c,d;c=b(a.target).data("slug"),d=f.section("installed_themes"),a.preventDefault(),window.confirm(f.settings.l10n.confirmDeleteTheme)&&(wp.updates.maybeRequestFilesystemCredentials(a),b(document).one("wp-theme-delete-success",function(){var a=f.control("installed_theme_"+c);a.container.remove(),f.control.remove(a.id),d.loaded=d.loaded-1,d.updateCount(),f.control.each(function(a){"theme"===a.params.type&&a.params.theme.id===c&&a.rerenderAsInstalled(!1)})}),wp.updates.deleteTheme({slug:c}),d.closeDetails(),d.focus())}}),f.Control=f.Class.extend({defaultActiveArguments:{duration:"fast",completeCallback:b.noop},initialize:function(a,c){var d,e,g,h=this;h.params={},b.extend(h,c||{}),h.id=a,h.selector="#customize-control-"+a.replace(/\]/g,"").replace(/\[/g,"-"),h.templateSelector="customize-control-"+h.params.type+"-content",h.container=b(h.params.content?h.params.content:h.selector),h.deferred={embedded:new b.Deferred},h.section=new f.Value,h.priority=new f.Value,h.active=new f.Value,h.activeArgumentsQueue=[],h.notifications=new f.Values({defaultConstructor:f.Notification}),h.elements=[],d=h.container.find("[data-customize-setting-link]"),e={},d.each(function(){var a,c=b(this);if(c.is(":radio")){if(a=c.prop("name"),e[a])return;e[a]=!0,c=d.filter('[name="'+a+'"]')}f(c.data("customizeSettingLink"),function(a){var b=new f.Element(c);h.elements.push(b),b.sync(a),b.set(a())})}),h.active.bind(function(a){var c=h.activeArgumentsQueue.shift();c=b.extend({},h.defaultActiveArguments,c),h.onChangeActive(a,c)}),h.section.set(h.params.section),h.priority.set(isNaN(h.params.priority)?10:h.params.priority),h.active.set(h.params.active),f.utils.bubbleChildValueChanges(h,["section","priority","active"]),g=b.map(h.params.settings,function(a){return a}),0===g.length?(h.setting=null,h.settings={},h.embed()):f.apply(f,g.concat(function(){var a;h.settings={};for(a in h.params.settings)h.settings[a]=f(h.params.settings[a]);h.setting=h.settings["default"]||null,_.each(h.settings,function(a){a.notifications.bind("add",function(b){var c,d,e;d=a.id+":"+b.code,e=_.extend({},b,{setting:a.id}),c=new f.Notification(d,e),h.notifications.add(c.code,c)}),a.notifications.bind("remove",function(b){h.notifications.remove(a.id+":"+b.code)})}),h.embed()})),h.deferred.embedded.done(function(){var a=_.debounce(function(){h.renderNotifications()});h.notifications.bind("add",function(b){wp.a11y.speak(b.message,"assertive"),a()}),h.notifications.bind("remove",a),h.renderNotifications(),h.ready()})},embed:function(){var a,b=this;a=function(a){var c;a&&f.section(a,function(a){a.deferred.embedded.done(function(){c=a.contentContainer.is("ul")?a.contentContainer:a.contentContainer.find("ul:first"),b.container.parent().is(c)||(c.append(b.container),b.renderContent()),b.deferred.embedded.resolve()})})},b.section.bind(a),a(b.section.get())},ready:function(){},getNotificationsContainerElement:function(){var a,c,d=this;return c=d.container.find(".customize-control-notifications-container:first"),c.length?c:(c=b('<div class="customize-control-notifications-container"></div>'),d.container.hasClass("customize-control-nav_menu_item")?d.container.find(".menu-item-settings:first").prepend(c):d.container.hasClass("customize-control-widget_form")?d.container.find(".widget-inside:first").prepend(c):(a=d.container.find(".customize-control-title"),a.length?a.after(c):d.container.prepend(c)),c)},renderNotifications:function(){var a,c,d=this,e=!1;a=d.getNotificationsContainerElement(),a&&a.length&&(c=[],d.notifications.each(function(a){c.push(a),"error"===a.type&&(e=!0)}),0===c.length?a.stop().slideUp("fast"):a.stop().slideDown("fast",null,function(){b(this).css("height","auto")}),d.notificationsTemplate||(d.notificationsTemplate=wp.template("customize-control-notifications")),d.container.toggleClass("has-notifications",0!==c.length),d.container.toggleClass("has-error",e),a.empty().append(b.trim(d.notificationsTemplate({notifications:c,altNotice:Boolean(d.altNotice)}))))},expand:function(a){f.section(this.section()).expand(a)},focus:d,onChangeActive:function(a,c){return c.unchanged?void(c.completeCallback&&c.completeCallback()):void(b.contains(document,this.container[0])?a?this.container.slideDown(c.duration,c.completeCallback):this.container.slideUp(c.duration,c.completeCallback):(this.container.toggle(a),c.completeCallback&&c.completeCallback()))},toggle:function(a){return this.onChangeActive(a,this.defaultActiveArguments)},activate:c.prototype.activate,deactivate:c.prototype.deactivate,_toggleActive:c.prototype._toggleActive,dropdownInit:function(){var a=this,b=this.container.find(".dropdown-status"),c=this.params,d=!1,e=function(a){"string"==typeof a&&c.statuses&&c.statuses[a]?b.html(c.statuses[a]).show():b.hide();
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keydown",".remove-button",c.cleanupPlayer),f.section(c.section()).container.on("expanded",function(){c.player&&c.player.setControlsSize()}).on("collapsed",function(){c.pausePlayer()}),a(c.setting()),c.setting.bind(a)},pausePlayer:function(){this.player&&this.player.pause()},cleanupPlayer:function(){this.player&&wp.media.mixin.removePlayer(this.player)},openFrame:function(a){f.utils.isKeydownButNotEnterEvent(a)||(a.preventDefault(),this.frame||this.initFrame(),this.frame.open())},initFrame:function(){this.frame=wp.media({button:{text:this.params.button_labels.frame_button},states:[new wp.media.controller.Library({title:this.params.button_labels.frame_title,library:wp.media.query({type:this.params.mime_type}),multiple:!1,date:!1})]}),this.frame.on("select",this.select)},select:function(){var a,b=this.frame.state().get("selection").first().toJSON(),c=window._wpmejsSettings||{};this.params.attachment=b,this.setting(b.id),a=this.container.find("audio, video").get(0),a?this.player=new MediaElementPlayer(a,c):this.cleanupPlayer()},restoreDefault:function(a){f.utils.isKeydownButNotEnterEvent(a)||(a.preventDefault(),this.params.attachment=this.params.defaultAttachment,this.setting(this.params.defaultAttachment.url))},removeFile:function(a){f.utils.isKeydownButNotEnterEvent(a)||(a.preventDefault(),this.params.attachment={},this.setting(""),this.renderContent())}}),f.UploadControl=f.MediaControl.extend({select:function(){var a,b=this.frame.state().get("selection").first().toJSON(),c=window._wpmejsSettings||{};this.params.attachment=b,this.setting(b.url),a=this.container.find("audio, video").get(0),a?this.player=new MediaElementPlayer(a,c):this.cleanupPlayer()},success:function(){},removerVisibility:function(){}}),f.ImageControl=f.UploadControl.extend({thumbnailSrc:function(){}}),f.BackgroundControl=f.UploadControl.extend({ready:function(){f.UploadControl.prototype.ready.apply(this,arguments)},select:function(){f.UploadControl.prototype.select.apply(this,arguments),wp.ajax.post("custom-background-add",{nonce:_wpCustomizeBackground.nonces.add,wp_customize:"on",customize_theme:f.settings.theme.stylesheet,attachment_id:this.params.attachment.id})}}),f.CroppedImageControl=f.MediaControl.extend({openFrame:function(a){f.utils.isKeydownButNotEnterEvent(a)||(this.initFrame(),this.frame.setState("library").open())},initFrame:function(){var a=_wpMediaViewsL10n;this.frame=wp.media({button:{text:a.select,close:!1},states:[new wp.media.controller.Library({title:this.params.button_labels.frame_title,library:wp.media.query({type:"image"}),multiple:!1,date:!1,priority:20,suggestedWidth:this.params.width,suggestedHeight:this.params.height}),new wp.media.controller.CustomizeImageCropper({imgSelectOptions:this.calculateImageSelectOptions,control:this})]}),this.frame.on("select",this.onSelect,this),this.frame.on("cropped",this.onCropped,this),this.frame.on("skippedcrop",this.onSkippedCrop,this)},onSelect:function(){var a=this.frame.state().get("selection").first().toJSON();this.params.width!==a.width||this.params.height!==a.height||this.params.flex_width||this.params.flex_height?this.frame.setState("cropper"):(this.setImageFromAttachment(a),this.frame.close())},onCropped:function(a){this.setImageFromAttachment(a)},calculateImageSelectOptions:function(a,b){var c,d,e,f=b.get("control"),g=!!parseInt(f.params.flex_width,10),h=!!parseInt(f.params.flex_height,10),i=a.get("width"),j=a.get("height"),k=parseInt(f.params.width,10),l=parseInt(f.params.height,10),m=k/l,n=k,o=l;return b.set("canSkipCrop",!f.mustBeCropped(g,h,k,l,i,j)),i/j>m?(l=j,k=l*m):(k=i,l=k/m),c=(i-k)/2,d=(j-l)/2,e={handles:!0,keys:!0,instance:!0,persistent:!0,imageWidth:i,imageHeight:j,minWidth:n>k?k:n,minHeight:o>l?l:o,x1:c,y1:d,x2:k+c,y2:l+d},h===!1&&g===!1&&(e.aspectRatio=k+":"+l),!0===h&&(delete e.minHeight,e.maxWidth=i),!0===g&&(delete e.minWidth,e.maxHeight=j),e},mustBeCropped:function(a,b,c,d,e,f){return!0===a&&!0===b?!1:!0===a&&d===f?!1:!0===b&&c===e?!1:c===e&&d===f?!1:!(c>=e)},onSkippedCrop:function(){var a=this.frame.state().get("selection").first().toJSON();this.setImageFromAttachment(a)},setImageFromAttachment:function(a){this.params.attachment=a,this.setting(a.id)}}),f.SiteIconControl=f.CroppedImageControl.extend({initFrame:function(){var a=_wpMediaViewsL10n;this.frame=wp.media({button:{text:a.select,close:!1},states:[new wp.media.controller.Library({title:this.params.button_labels.frame_title,library:wp.media.query({type:"image"}),multiple:!1,date:!1,priority:20,suggestedWidth:this.params.width,suggestedHeight:this.params.height}),new wp.media.controller.SiteIconCropper({imgSelectOptions:this.calculateImageSelectOptions,control:this})]}),this.frame.on("select",this.onSelect,this),this.frame.on("cropped",this.onCropped,this),this.frame.on("skippedcrop",this.onSkippedCrop,this)},onSelect:function(){var a=this.frame.state().get("selection").first().toJSON(),b=this;this.params.width!==a.width||this.params.height!==a.height||this.params.flex_width||this.params.flex_height?this.frame.setState("cropper"):wp.ajax.post("crop-image",{nonce:a.nonces.edit,id:a.id,context:"site-icon",cropDetails:{x1:0,y1:0,width:this.params.width,height:this.params.height,dst_width:this.params.width,dst_height:this.params.height}}).done(function(a){b.setImageFromAttachment(a),b.frame.close()}).fail(function(){b.frame.trigger("content:error:crop")})},setImageFromAttachment:function(a){var c,d=["site_icon-32","thumbnail","full"];_.each(d,function(b){c||_.isUndefined(a.sizes[b])||(c=a.sizes[b])}),this.params.attachment=a,this.setting(a.id),b('link[sizes="32x32"]').attr("href",c.url)},removeFile:function(a){f.utils.isKeydownButNotEnterEvent(a)||(a.preventDefault(),this.params.attachment={},this.setting(""),this.renderContent(),b('link[rel="icon"]').attr("href",""))}}),f.HeaderControl=f.Control.extend({ready:function(){this.btnRemove=b("#customize-control-header_image .actions .remove"),this.btnNew=b("#customize-control-header_image .actions .new"),_.bindAll(this,"openMedia","removeImage"),this.btnNew.on("click",this.openMedia),this.btnRemove.on("click",this.removeImage),f.HeaderTool.currentHeader=this.getInitialHeaderImage(),new f.HeaderTool.CurrentView({model:f.HeaderTool.currentHeader,el:"#customize-control-header_image .current .container"}),new f.HeaderTool.ChoiceListView({collection:f.HeaderTool.UploadsList=new f.HeaderTool.ChoiceList,el:"#customize-control-header_image .choices .uploaded .list"}),new f.HeaderTool.ChoiceListView({collection:f.HeaderTool.DefaultsList=new f.HeaderTool.DefaultsList,el:"#customize-control-header_image .choices .default .list"}),f.HeaderTool.combinedList=f.HeaderTool.CombinedList=new f.HeaderTool.CombinedList([f.HeaderTool.UploadsList,f.HeaderTool.DefaultsList]),wp.media.controller.Cropper.prototype.defaults.doCropArgs.wp_customize="on",wp.media.controller.Cropper.prototype.defaults.doCropArgs.customize_theme=f.settings.theme.stylesheet},getInitialHeaderImage:function(){if(!f.get().header_image||!f.get().header_image_data||_.contains(["remove-header","random-default-image","random-uploaded-image"],f.get().header_image))return new f.HeaderTool.ImageModel;var a=_.find(_wpCustomizeHeader.uploads,function(a){return a.attachment_id===f.get().header_image_data.attachment_id});return a||(a={url:f.get().header_image,thumbnail_url:f.get().header_image,attachment_id:f.get().header_image_data.attachment_id}),new f.HeaderTool.ImageModel({header:a,choice:a.url.split("/").pop()})},calculateImageSelectOptions:function(a,b){var c,d,e,g,h,i,j=parseInt(_wpCustomizeHeader.data.width,10),k=parseInt(_wpCustomizeHeader.data.height,10),l=!!parseInt(_wpCustomizeHeader.data["flex-width"],10),m=!!parseInt(_wpCustomizeHeader.data["flex-height"],10);return h=a.get("width"),g=a.get("height"),this.headerImage=new f.HeaderTool.ImageModel,this.headerImage.set({themeWidth:j,themeHeight:k,themeFlexWidth:l,themeFlexHeight:m,imageWidth:h,imageHeight:g}),b.set("canSkipCrop",!this.headerImage.shouldBeCropped()),c=j/k,d=h,e=g,d/e>c?(k=e,j=k*c):(j=d,k=j/c),i={handles:!0,keys:!0,instance:!0,persistent:!0,imageWidth:h,imageHeight:g,x1:0,y1:0,x2:j,y2:k},m===!1&&l===!1&&(i.aspectRatio=j+":"+k),m===!1&&(i.maxHeight=k),l===!1&&(i.maxWidth=j),i},openMedia:function(a){var 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a=this.frame.state().get("selection").first().toJSON(),b=this;this.params.width!==a.width||this.params.height!==a.height||this.params.flex_width||this.params.flex_height?this.frame.setState("cropper"):wp.ajax.post("crop-image",{nonce:a.nonces.edit,id:a.id,context:"site-icon",cropDetails:{x1:0,y1:0,width:this.params.width,height:this.params.height,dst_width:this.params.width,dst_height:this.params.height}}).done(function(a){b.setImageFromAttachment(a),b.frame.close()}).fail(function(){b.frame.trigger("content:error:crop")})},setImageFromAttachment:function(a){var c,d,e=["site_icon-32","thumbnail","full"];_.each(e,function(b){d||_.isUndefined(a.sizes[b])||(d=a.sizes[b])}),this.params.attachment=a,this.setting(a.id),d&&(c=b('link[rel="icon"][sizes="32x32"]'),c.attr("href",d.url))},removeFile:function(a){f.utils.isKeydownButNotEnterEvent(a)||(a.preventDefault(),this.params.attachment={},this.setting(""),this.renderContent(),b('link[rel="icon"][sizes="32x32"]').attr("href","/favicon.ico"))}}),f.HeaderControl=f.Control.extend({ready:function(){this.btnRemove=b("#customize-control-header_image .actions .remove"),this.btnNew=b("#customize-control-header_image .actions .new"),_.bindAll(this,"openMedia","removeImage"),this.btnNew.on("click",this.openMedia),this.btnRemove.on("click",this.removeImage),f.HeaderTool.currentHeader=this.getInitialHeaderImage(),new f.HeaderTool.CurrentView({model:f.HeaderTool.currentHeader,el:"#customize-control-header_image .current .container"}),new f.HeaderTool.ChoiceListView({collection:f.HeaderTool.UploadsList=new 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a||(a={url:f.get().header_image,thumbnail_url:f.get().header_image,attachment_id:f.get().header_image_data.attachment_id}),new f.HeaderTool.ImageModel({header:a,choice:a.url.split("/").pop()})},calculateImageSelectOptions:function(a,b){var c,d,e,g,h,i,j=parseInt(_wpCustomizeHeader.data.width,10),k=parseInt(_wpCustomizeHeader.data.height,10),l=!!parseInt(_wpCustomizeHeader.data["flex-width"],10),m=!!parseInt(_wpCustomizeHeader.data["flex-height"],10);return h=a.get("width"),g=a.get("height"),this.headerImage=new f.HeaderTool.ImageModel,this.headerImage.set({themeWidth:j,themeHeight:k,themeFlexWidth:l,themeFlexHeight:m,imageWidth:h,imageHeight:g}),b.set("canSkipCrop",!this.headerImage.shouldBeCropped()),c=j/k,d=h,e=g,d/e>c?(k=e,j=k*c):(j=d,k=j/c),i={handles:!0,keys:!0,instance:!0,persistent:!0,imageWidth:h,imageHeight:g,x1:0,y1:0,x2:j,y2:k},m===!1&&l===!1&&(i.aspectRatio=j+":"+k),m===!1&&(i.maxHeight=k),l===!1&&(i.maxWidth=j),i},openMedia:function(a){var b=_wpMediaViewsL10n;a.preventDefault(),this.frame=wp.media({button:{text:b.selectAndCrop,close:!1},states:[new wp.media.controller.Library({title:b.chooseImage,library:wp.media.query({type:"image"}),multiple:!1,date:!1,priority:20,suggestedWidth:_wpCustomizeHeader.data.width,suggestedHeight:_wpCustomizeHeader.data.height}),new wp.media.controller.Cropper({imgSelectOptions:this.calculateImageSelectOptions})]}),this.frame.on("select",this.onSelect,this),this.frame.on("cropped",this.onCropped,this),this.frame.on("skippedcrop",this.onSkippedCrop,this),this.frame.open()},onSelect:function(){this.frame.setState("cropper")},onCropped:function(a){var b=a.url,c=a.attachment_id,d=a.width,e=a.height;this.setImageFromURL(b,c,d,e)},onSkippedCrop:function(a){var b=a.get("url"),c=a.get("width"),d=a.get("height");this.setImageFromURL(b,a.id,c,d)},setImageFromURL:function(a,b,c,d){var e,g={};g.url=a,g.thumbnail_url=a,g.timestamp=_.now(),b&&(g.attachment_id=b),c&&(g.width=c),d&&(g.height=d),e=new 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c,d,e,g=this,h=!1,i=!1,j=null,k="{}"!==g.query.customized;g._ready&&g.unbind("ready",g._ready),g._ready=function(b){i=!0,j=b,g.container.addClass("iframe-ready"),b&&h&&a.resolveWith(g,[b])},g.bind("ready",g._ready),c=document.createElement("a"),c.href=g.previewUrl(),d=_.extend(f.utils.parseQueryString(c.search.substr(1)),{customize_changeset_uuid:g.query.customize_changeset_uuid,customize_theme:g.query.customize_theme,customize_messenger_channel:g.query.customize_messenger_channel}),c.search=b.param(d),g.iframe=b("<iframe 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e.customize_messenger_channel,_.isEmpty(e)?c.search="":c.search=b.param(e)),i.push(c),d.scheme.get()+":"!==c.protocol&&(c=document.createElement("a"),c.href=i[0].href,c.protocol=d.scheme.get()+":",i.unshift(c)),g=document.createElement("a"),_.find(i,function(a){return!_.isUndefined(_.find(d.allowedUrls,function(b){return g.href=b,c.protocol===g.protocol&&c.host===g.host&&0===g.pathname.indexOf(c.pathname)?(h=a.href,!0):void 0}))}),h)}),d.bind("ready",d.ready),d.deferred.active.done(_.bind(d.keepPreviewAlive,d)),d.bind("synced",function(){d.send("active")}),d.previewUrl.bind(d.refresh),d.scroll=0,d.bind("scroll",function(a){d.scroll=a}),d.bind("url",function(a){var b,c=!1;d.scroll=0,b=function(){c=!0},d.previewUrl.bind(b),d.previewUrl.set(a),d.previewUrl.unbind(b),c||d.refresh()}),d.bind("documentTitle",function(a){f.setDocumentTitle(a)})},ready:function(a){var b,c=this,d={};d.settings=f.get(),("resolved"!==c.deferred.active.state()||c.loading)&&(d.scroll=c.scroll),c.send("sync",d),a.currentUrl&&(c.previewUrl.unbind(c.refresh),c.previewUrl.set(a.currentUrl),c.previewUrl.bind(c.refresh)),b={panel:a.activePanels,section:a.activeSections,control:a.activeControls},_(b).each(function(a,b){f[b].each(function(c,d){var e=_.isUndefined(f.settings[b+"s"][d]);e&&_.isUndefined(a[d])||(a[d]?c.activate():c.deactivate())})}),a.settingValidities&&f._handleSettingValidities({settingValidities:a.settingValidities,focusInvalidControl:!1})},keepPreviewAlive:function(){var a,b,c,d,e=this;d=function(){b=setTimeout(c,f.settings.timeouts.keepAliveCheck)},a=function(){f.state("previewerAlive").set(!0),clearTimeout(b),d()},c=function(){f.state("previewerAlive").set(!1)},d(),e.bind("ready",a),e.bind("keep-alive",a)},query:function(){},abort:function(){this.loading&&(this.loading.destroy(),delete this.loading)},refresh:function(){var a=this;a.send("loading-initiated"),a.abort(),a.loading=new f.PreviewFrame({url:a.url(),previewUrl:a.previewUrl(),query:a.query({excludeCustomizedSaved:!0})||{},container:a.container}),a.loading.done(function(b){var c,d,e=this;c=a.preview,a.preview=e,a.targetWindow(e.targetWindow()),a.channel(e.channel()),d=function(){e.unbind("synced",d),c&&c.destroy(),a.deferred.active.resolve(),delete a.loading},e.bind("synced",d),a.trigger("ready",b)}),a.loading.fail(function(b){a.send("loading-failed"),"logged out"===b&&(a.preview&&(a.preview.destroy(),delete a.preview),a.login().done(a.refresh)),"cheatin"===b&&a.cheatin()})},login:function(){var a,c,d,e=this;return this._login?this._login:(a=b.Deferred(),this._login=a.promise(),c=new f.Messenger({channel:"login",url:f.settings.url.login}),d=b("<iframe />",{src:f.settings.url.login,title:f.l10n.loginIframeTitle}).appendTo(this.container),c.targetWindow(d[0].contentWindow),c.bind("login",function(){var b=e.refreshNonces();b.always(function(){d.remove(),c.destroy(),delete e._login}),b.done(function(){a.resolve()}),b.fail(function(){e.cheatin(),a.reject()})}),this._login)},cheatin:function(){b(document.body).empty().addClass("cheatin").append("<h1>"+f.l10n.cheatin+"</h1><p>"+f.l10n.notAllowed+"</p>")},refreshNonces:function(){var a,c=b.Deferred();return c.promise(),a=wp.ajax.post("customize_refresh_nonces",{wp_customize:"on",customize_theme:f.settings.theme.stylesheet}),a.done(function(a){f.trigger("nonce-refresh",a),c.resolve()}),a.fail(function(){c.reject()}),c}}),f.settingConstructor={},f.controlConstructor={color:f.ColorControl,media:f.MediaControl,upload:f.UploadControl,image:f.ImageControl,cropped_image:f.CroppedImageControl,site_icon:f.SiteIconControl,header:f.HeaderControl,background:f.BackgroundControl,theme:f.ThemeControl},f.panelConstructor={themes:f.ThemesPanel},f.sectionConstructor={themes:f.ThemesSection},f._handleSettingValidities=function(a){var b,c=[],d=!1;_.each(a.settingValidities,function(a,b){var d=f(b);d&&(_.isObject(a)&&_.each(a,function(a,b){var e,g,h=!1;e=new f.Notification(b,_.extend({fromServer:!0},a)),g=d.notifications(e.code),g&&(h=e.type!==g.type||e.message!==g.message||!_.isEqual(e.data,g.data)),h&&d.notifications.remove(b),d.notifications.has(e.code)||d.notifications.add(b,e),c.push(d.id)}),d.notifications.each(function(b){"error"!==b.type||!0!==a&&a[b.code]||d.notifications.remove(b.code)}))}),a.focusInvalidControl&&(b=f.findControlsForSettings(c),_(_.values(b)).find(function(a){return _(a).find(function(a){var b=a.section()&&f.section.has(a.section())&&f.section(a.section()).expanded();return b&&a.expanded&&(b=a.expanded()),b&&(a.focus(),d=!0),d})}),d||_.isEmpty(b)||_.values(b)[0][0].focus())},f.findControlsForSettings=function(a){var b,c={};return _.each(_.unique(a),function(a){var d=f(a);d&&(b=d.findControls(),b&&b.length>0&&(c[a]=b))}),c},f.reflowPaneContents=_.bind(function(){var a,c,d,e=[],g=!1;document.activeElement&&(c=b(document.activeElement)),f.panel.each(function(b){if("themes"!==b.id){var c=b.sections(),d=_.pluck(c,"headContainer");e.push(b),a=b.contentContainer.is("ul")?b.contentContainer:b.contentContainer.find("ul:first"),f.utils.areElementListsEqual(d,a.children("[id]"))||(_(c).each(function(b){a.append(b.headContainer)}),g=!0)}}),f.section.each(function(b){var c=b.controls(),d=_.pluck(c,"container");b.panel()||e.push(b),a=b.contentContainer.is("ul")?b.contentContainer:b.contentContainer.find("ul:first"),f.utils.areElementListsEqual(d,a.children("[id]"))||(_(c).each(function(b){a.append(b.container)}),g=!0)}),e.sort(f.utils.prioritySort),d=_.pluck(e,"headContainer"),a=b("#customize-theme-controls .customize-pane-parent"),f.utils.areElementListsEqual(d,a.children())||(_(e).each(function(b){a.append(b.headContainer)}),g=!0),f.panel.each(function(a){var b=a.active();a.active.callbacks.fireWith(a.active,[b,b])}),f.section.each(function(a){var b=a.active();a.active.callbacks.fireWith(a.active,[b,b])}),g&&c&&c.focus(),f.trigger("pane-contents-reflowed")},f),b(function(){if(f.settings=window._wpCustomizeSettings,f.l10n=window._wpCustomizeControlsL10n,f.settings&&b.support.postMessage&&(b.support.cors||!f.settings.isCrossDomain)){null===f.PreviewFrame.prototype.sensitivity&&(f.PreviewFrame.prototype.sensitivity=f.settings.timeouts.previewFrameSensitivity),null===f.Previewer.prototype.refreshBuffer&&(f.Previewer.prototype.refreshBuffer=f.settings.timeouts.windowRefresh);var a,c=b(document.body),d=c.children(".wp-full-overlay"),e=b("#customize-info .panel-title.site-title"),g=b(".customize-controls-close"),h=b("#save"),i=b("#customize-footer-actions");b("#customize-controls").on("keydown",function(a){var c=13===a.which,d=b(a.target);c&&(d.is("input:not([type=button])")||d.is("select"))&&a.preventDefault()}),b(".customize-info").find("> .accordion-section-title .customize-help-toggle").on("click",function(){var a=b(this).closest(".accordion-section"),c=a.find(".customize-panel-description:first");a.hasClass("cannot-expand")||(a.hasClass("open")?(a.toggleClass("open"),c.slideUp(f.Panel.prototype.defaultExpandedArguments.duration),b(this).attr("aria-expanded",!1)):(c.slideDown(f.Panel.prototype.defaultExpandedArguments.duration),a.toggleClass("open"),b(this).attr("aria-expanded",!0)))}),f.previewer=new f.Previewer({container:"#customize-preview",form:"#customize-controls",previewUrl:f.settings.url.preview,allowedUrls:f.settings.url.allowed},{nonce:f.settings.nonce,query:function(a){var b={wp_customize:"on",customize_theme:f.settings.theme.stylesheet,nonce:this.nonce.preview,customize_changeset_uuid:f.settings.changeset.uuid};return b.customized=JSON.stringify(f.dirtyValues({unsaved:a&&a.excludeCustomizedSaved})),b},save:function(c){function d(a){n[a.id]=!0}var e,g,i,j=this,k=b.Deferred(),l="publish",m=f.state("processing"),n={},o=[];return c&&c.status&&(l=c.status),f.state("saving").get()&&(k.reject("already_saving"),k.promise()),f.state("saving").set(!0),f.bind("change",d),g=function(){var e,g,m={};return f.each(function(a){a.notifications.each(function(b){"error"!==b.type||b.fromServer||(o.push(a.id),m[a.id]||(m[a.id]={}),m[a.id][b.code]=b)})}),i=f.findControlsForSettings(o),_.isEmpty(i)?(g=b.extend(j.query({excludeCustomizedSaved:!1}),{nonce:j.nonce.save,customize_changeset_status:l}),c&&c.date&&(g.customize_changeset_date=c.date),c&&c.title&&(g.customize_changeset_title=c.title),e=wp.ajax.post("customize_save",g),h.prop("disabled",!0),f.trigger("save",e),e.always(function(){f.state("saving").set(!1),h.prop("disabled",!1),f.unbind("change",d)}),e.fail(function(a){"0"===a?a="not_logged_in":"-1"===a&&(a="invalid_nonce"),"invalid_nonce"===a?j.cheatin():"not_logged_in"===a&&(j.preview.iframe.hide(),j.login().done(function(){j.save(),j.preview.iframe.show()})),a.setting_validities&&f._handleSettingValidities({settingValidities:a.setting_validities,focusInvalidControl:!0}),k.rejectWith(j,[a]),f.trigger("error",a)}),void e.done(function(b){j.send("saved",b),f.state("changesetStatus").set(b.changeset_status),"publish"===b.changeset_status&&(f.state("changesetStatus").set(""),f.settings.changeset.uuid=b.next_changeset_uuid,a.send("changeset-uuid",f.settings.changeset.uuid)),b.setting_validities&&f._handleSettingValidities({settingValidities:b.setting_validities,focusInvalidControl:!0}),k.resolveWith(j,[b]),f.trigger("saved",b),_.isEmpty(n)||f.state("saved").set(!1)})):(_.values(i)[0][0].focus(),f.unbind("change",d),k.rejectWith(j,[{setting_invalidities:m}]),f.state("saving").set(!1),k.promise())},0===m()?g():(e=function(){0===m()&&(f.state.unbind("change",e),g())},f.state.bind("change",e)),k.promise()}}),f.previewer.bind("nonce",function(a){b.extend(this.nonce,a)}),f.bind("nonce-refresh",function(a){b.extend(f.settings.nonce,a),b.extend(f.previewer.nonce,a),f.previewer.send("nonce-refresh",a)}),b.each(f.settings.settings,function(a,b){var c,d=f.settingConstructor[b.type]||f.Setting;c=new d(a,b.value,{transport:b.transport,previewer:f.previewer,dirty:!!b.dirty}),f.add(a,c)}),b.each(f.settings.panels,function(a,b){var c,d=f.panelConstructor[b.type]||f.Panel;c=new d(a,{params:b}),f.panel.add(a,c)}),b.each(f.settings.sections,function(a,b){var c,d=f.sectionConstructor[b.type]||f.Section;c=new d(a,{params:b}),f.section.add(a,c)}),b.each(f.settings.controls,function(a,b){var c,d=f.controlConstructor[b.type]||f.Control;c=new d(a,{params:b,previewer:f.previewer}),f.control.add(a,c)}),_.each(["panel","section","control"],function(a){var b=f.settings.autofocus[a];b&&f[a](b,function(a){a.deferred.embedded.done(function(){f.previewer.deferred.active.done(function(){a.focus()})})})}),f.bind("ready",f.reflowPaneContents),b([f.panel,f.section,f.control]).each(function(a,b){var c=_.debounce(f.reflowPaneContents,f.settings.timeouts.reflowPaneContents);b.bind("add",c),b.bind("change",c),b.bind("remove",c)}),function(){var a,d=new f.Values,e=d.create("saved"),i=d.create("saving"),j=d.create("activated"),k=d.create("processing"),l=d.create("paneVisible"),m=d.create("expandedPanel"),n=d.create("expandedSection"),o=d.create("changesetStatus"),p=d.create("previewerAlive");d.bind("change",function(){var a;j()?""===o.get()&&e()?(h.val(f.l10n.saved),g.find(".screen-reader-text").text(f.l10n.close)):(h.val(f.l10n.save),g.find(".screen-reader-text").text(f.l10n.cancel)):(h.val(f.l10n.activate),g.find(".screen-reader-text").text(f.l10n.cancel)),a=!i()&&(!j()||!e()||""!==o()&&"publish"!==o()),h.prop("disabled",!a)}),e(!0),i(!1),j(f.settings.theme.active),k(0),l(!0),m(!1),n(!1),p(!0),o(f.settings.changeset.status),f.bind("change",function(){d("saved").set(!1)}),i.bind(function(a){c.toggleClass("saving",a)}),f.bind("saved",function(a){d("saved").set(!0),"publish"===a.changeset_status&&d("activated").set(!0)}),j.bind(function(a){a&&f.trigger("activated")}),a=function(a){var c,d;if(c=document.createElement("a"),c.href=location.href,d=f.utils.parseQueryString(c.search.substr(1)),a){if(d.changeset_uuid===f.settings.changeset.uuid)return;d.changeset_uuid=f.settings.changeset.uuid}else{if(!d.changeset_uuid)return;delete d.changeset_uuid}c.search=b.param(d),history.replaceState({},document.title,c.href)},history.replaceState&&(e.bind(function(b){b||a(!0)}),o.bind(function(b){a(""!==b)})),f.state=d}(),f.previewer.previewUrl()?f.previewer.refresh():f.previewer.previewUrl(f.settings.url.home),h.click(function(a){f.previewer.save(),a.preventDefault()}).keydown(function(a){9!==a.which&&(13===a.which&&f.previewer.save(),a.preventDefault())}),g.keydown(function(a){9!==a.which&&(13===a.which&&this.click(),a.preventDefault())}),b(".collapse-sidebar").on("click",function(){f.state("paneVisible").set(!f.state("paneVisible").get())}),f.state("paneVisible").bind(function(a){d.toggleClass("expanded",a),d.toggleClass("collapsed",!a),a?b(".collapse-sidebar").attr({"aria-expanded":"true","aria-label":f.l10n.collapseSidebar}):b(".collapse-sidebar").attr({"aria-expanded":"false","aria-label":f.l10n.expandSidebar})}),b("body").on("keydown",function(a){var c,d=[],e=[],g=[];if(27===a.which&&(f.control.each(function(a){a.expanded&&a.expanded()&&_.isFunction(a.collapse)&&d.push(a)}),f.section.each(function(a){a.expanded()&&e.push(a)}),f.panel.each(function(a){a.expanded()&&g.push(a)}),d.length>0&&0===e.length&&(d.length=0),c=d[0]||e[0]||g[0])){if("themes"===c.params.type)return void(b("body").hasClass("modal-open")?c.closeDetails():wp.customize.panel("themes").collapse());c.collapse(),a.preventDefault()}}),b(".customize-controls-preview-toggle").on("click",function(){d.toggleClass("preview-only")}),function(){var a,c,d,e,g,h,i,j=b(".wp-full-overlay-sidebar-content");a=function(a){var b,g=a,i=f.state("expandedSection").get(),j=f.state("expandedPanel").get();if(h&&h.element&&d(h.element),!g)if(!i&&j&&j.contentContainer)g=j;else{if(j||!i||!i.contentContainer)return void(h=!1);g=i}b=g.contentContainer.find(".customize-section-title, .panel-meta").first(),b.length?(h={instance:g,element:b,parent:b.closest(".customize-pane-child"),height:c(b)},i&&e(h.element,h.parent)):h=!1},f.state("expandedSection").bind(a),f.state("expandedPanel").bind(a),j.on("scroll",_.throttle(function(){if(h){var a=j.scrollTop(),b=i?i>=a:!0;i=a,g(h,a,b)}},8)),d=function(a){a.hasClass("is-sticky")&&a.removeClass("is-sticky").addClass("maybe-sticky is-in-view").css("top",j.scrollTop()+"px")},e=function(a,b){a.removeClass("maybe-sticky is-in-view").css({width:"",top:""}),b.css("padding-top","")},c=function(a){var b=a.data("height");return b||(b=a.outerHeight(),a.data("height",b)),b},g=function(a,b,c){var d=a.element,e=a.parent,f=a.height,g=parseInt(d.css("top"),10),h=d.hasClass("maybe-sticky"),i=d.hasClass("is-sticky"),j=d.hasClass("is-in-view");if(!c)return i&&(g=b,d.removeClass("is-sticky").css({top:g+"px",width:""})),void(j&&b>g+f&&(d.removeClass("is-in-view"),e.css("padding-top","")));if(!h&&b>=f)h=!0,d.addClass("maybe-sticky");else if(0===b)return d.removeClass("maybe-sticky is-in-view is-sticky").css({top:"",width:""}),void e.css("padding-top","");j&&!i?g>=b&&d.addClass("is-sticky").css({top:"",width:e.outerWidth()+"px"}):h&&!j&&(d.addClass("is-in-view").css("top",b-f+"px"),e.css("padding-top",f+"px"))}}(),f.previewedDevice=new f.Value,f.bind("ready",function(){_.find(f.settings.previewableDevices,function(a,b){return!0===a["default"]?(f.previewedDevice.set(b),!0):void 0})}),i.find(".devices button").on("click",function(a){f.previewedDevice.set(b(a.currentTarget).data("device"))}),f.previewedDevice.bind(function(a){var c=b(".wp-full-overlay"),d="";i.find(".devices button").removeClass("active").attr("aria-pressed",!1),i.find(".devices .preview-"+a).addClass("active").attr("aria-pressed",!0),b.each(f.settings.previewableDevices,function(a){d+=" preview-"+a}),c.removeClass(d).addClass("preview-"+a)}),e.length&&f("blogname",function(a){var c=function(){e.text(b.trim(a())||f.l10n.untitledBlogName)};a.bind(c),c()}),a=new f.Messenger({url:f.settings.url.parent,channel:"loader"}),a.bind("back",function(){g.on("click.customize-controls-close",function(b){b.preventDefault(),a.send("close")})}),b(window).on("beforeunload.customize-confirm",function(){return f.state("saved")()?void 0:(setTimeout(function(){d.removeClass("customize-loading")},1),f.l10n.saveAlert)}),b.each(["saved","change"],function(b,c){
+f.bind(c,function(){a.send(c)})}),f.bind("title",function(b){a.send("title",b)}),a.send("changeset-uuid",f.settings.changeset.uuid),a.send("ready"),b.each({background_image:{controls:["background_repeat","background_position_x","background_attachment"],callback:function(a){return!!a}},show_on_front:{controls:["page_on_front","page_for_posts"],callback:function(a){return"page"===a}},header_textcolor:{controls:["header_textcolor"],callback:function(a){return"blank"!==a}}},function(a,c){f(a,function(a){b.each(c.controls,function(b,d){f.control(d,function(b){var d=function(a){b.container.toggle(c.callback(a))};d(a.get()),a.bind(d)})})})}),f.control("display_header_text",function(a){var b="";a.elements[0].unsync(f("header_textcolor")),a.element=new f.Element(a.container.find("input")),a.element.set("blank"!==a.setting()),a.element.bind(function(c){c||(b=f("header_textcolor").get()),a.setting.set(c?b:"blank")}),a.setting.bind(function(b){a.element.set("blank"!==b)})}),f("show_on_front","page_on_front",function(a,b){var c=function(){"page"===a()&&parseInt(b(),10)>0&&f.previewer.previewUrl.set(f.settings.url.home)};a.bind(c),b.bind(c)}),f("page_for_posts",function(a){a.bind(function(a){a=parseInt(a,10),a>0&&f.previewer.previewUrl.set(f.settings.url.home+"?page_id="+a)})}),f.previewer.bind("selective-refresh-setting-validities",function(a){f._handleSettingValidities({settingValidities:a,focusInvalidControl:!1})}),f.previewer.bind("focus-control-for-setting",function(a){var b;f.control.each(function(c){var d=_.pluck(c.settings,"id");-1!==_.indexOf(d,a)&&(b=c)}),b&&b.focus()}),f.previewer.bind("refresh",function(){f.previewer.refresh()}),function(){var a,c,d,e=!1;c=function(){e||(e=!0,f.requestChangesetUpdate().always(function(){e=!1})),d()},d=function(){clearTimeout(a),a=setTimeout(function(){c()},f.settings.timeouts.changesetAutoSave)},d(),b(window).on("blur.wp-customize-changeset-update",function(){c()}),b(window).on("beforeunload.wp-customize-changeset-update",function(){c()})}(),f.trigger("ready")}})}(wp,jQuery);
\ No newline at end of file
diff --git a/wp-includes/general-template.php b/wp-includes/general-template.php
index 5174936de1..8e58b5cf49 100644
--- a/wp-includes/general-template.php
+++ b/wp-includes/general-template.php
@@ -2776,12 +2776,26 @@ function wp_site_icon() {
 		return;
 	}
 
-	$meta_tags = array(
-		sprintf( '<link rel="icon" href="%s" sizes="32x32" />', esc_url( get_site_icon_url( 32 ) ) ),
-		sprintf( '<link rel="icon" href="%s" sizes="192x192" />', esc_url( get_site_icon_url( 192 ) ) ),
-		sprintf( '<link rel="apple-touch-icon-precomposed" href="%s" />', esc_url( get_site_icon_url( 180 ) ) ),
-		sprintf( '<meta name="msapplication-TileImage" content="%s" />', esc_url( get_site_icon_url( 270 ) ) ),
-	);
+	$meta_tags = array();
+	$icon_32 = get_site_icon_url( 32 );
+	if ( empty( $icon_32 ) && is_customize_preview() ) {
+		$icon_32 = '/favicon.ico'; // Serve default favicon URL in customizer so element can be updated for preview.
+	}
+	if ( $icon_32 ) {
+		$meta_tags[] = sprintf( '<link rel="icon" href="%s" sizes="32x32" />', esc_url( $icon_32 ) );
+	}
+	$icon_192 = get_site_icon_url( 192 );
+	if ( $icon_192 ) {
+		$meta_tags[] = sprintf( '<link rel="icon" href="%s" sizes="192x192" />', esc_url( $icon_192 ) );
+	}
+	$icon_180 = get_site_icon_url( 180 );
+	if ( $icon_180 ) {
+		$meta_tags[] = sprintf( '<link rel="apple-touch-icon-precomposed" href="%s" />', esc_url( $icon_180 ) );
+	}
+	$icon_270 = get_site_icon_url( 270 );
+	if ( $icon_270 ) {
+		$meta_tags[] = sprintf( '<meta name="msapplication-TileImage" content="%s" />', esc_url( $icon_270 ) );
+	}
 
 	/**
 	 * Filters the site icon meta tags, so Plugins can add their own.
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 8378f2c47a..629d3c95e7 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.7-alpha-38900';
+$wp_version = '4.7-alpha-38901';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.