Customize: Separate preview and actions in the site icon control.

Reverts [37456] to allow users to remove/change a site icon even if the attachment has corrupt/missing data about sizes.

Merge of [37724] to the 4.5 branch.

See #36749.
Built from https://develop.svn.wordpress.org/branches/4.5@37725


git-svn-id: http://core.svn.wordpress.org/branches/4.5@37691 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/customize/class-wp-customize-site-icon-control.php

@@ -60,6 +60,7 @@ class WP_Customize_Site_Icon_Control extends WP_Customize_Cropped_Image_Control
 		</label>
 
 		<# if ( data.attachment && data.attachment.id ) { #>
+		<# if ( data.attachment.sizes ) { #>
 		<div class="current">
 			<div class="container">
 				<div class="site-icon-preview">
@@ -75,6 +76,7 @@ class WP_Customize_Site_Icon_Control extends WP_Customize_Cropped_Image_Control
 				</div>
 			</div>
 		</div>
+		<# } #>
 		<div class="actions">
 			<# if ( data.canUpload ) { #>
 				<button type="button" class="button remove-button"><?php echo $this->button_labels['remove']; ?></button>

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.5.3-alpha-37711';
+$wp_version = '4.5.3-alpha-37725';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.