FEATURE: search menu options opens full page search

app/assets/javascripts/discourse/controllers/full-page-search.js.es6

@@ -18,9 +18,10 @@ export default Ember.Controller.extend({
   bulkSelectEnabled: null,
 
   loading: Em.computed.not("model"),
-  queryParams: ["q", "context_id", "context", "skip_context"],
+  queryParams: ["q", "isExpanded", "context_id", "context", "skip_context"],
   q: null,
   selected: [],
+  isExpanded: false,
   context_id: null,
   context: null,
   searching: false,

app/assets/javascripts/discourse/routes/full-page-search.js.es6

@@ -5,7 +5,7 @@ import PreloadStore from 'preload-store';
 import { getTransient, setTransient } from 'discourse/lib/page-tracker';
 
 export default Discourse.Route.extend({
-  queryParams: { q: {}, context_id: {}, context: {}, skip_context: {} },
+  queryParams: { q: {}, isExpanded: false, context_id: {}, context: {}, skip_context: {} },
 
   model(params) {
     const cached = getTransient('lastSearch');

app/assets/javascripts/discourse/widgets/search-menu-controls.js.es6

@@ -44,7 +44,7 @@ createWidget('search-context', {
                   ]));
     }
 
-    result.push(this.attach('link', { href: '/search',
+    result.push(this.attach('link', { href: '/search?isExpanded=true',
                                       label: 'show_help',
                                       className: 'show-help' }));
     result.push(h('div.clearfix'));