Support adding items to the site map via plugin outlet.

app/assets/javascripts/discourse/controllers/site-map.js.es6

@@ -1,4 +1,6 @@
 export default Ember.ArrayController.extend(Discourse.HasCurrentUser, {
+  needs: ['application'],
+
   showBadgesLink: function(){return Discourse.SiteSettings.enable_badges;}.property(),
   showAdminLinks: Em.computed.alias('currentUser.staff'),
   flaggedPostsCount: Em.computed.alias("currentUser.site_flagged_posts_count"),
@@ -22,8 +24,8 @@ export default Ember.ArrayController.extend(Discourse.HasCurrentUser, {
   }.property(),
 
   categories: function() {
-    var hideUncategorized = !Discourse.SiteSettings.allow_uncategorized_topics,
-        showSubcatList = Discourse.SiteSettings.show_subcategory_list,
+    var hideUncategorized = !this.siteSettings.allow_uncategorized_topics,
+        showSubcatList = this.siteSettings.show_subcategory_list,
         isStaff = Discourse.User.currentProp('staff');
     return Discourse.Category.list().reject(function(c) {
       if (showSubcatList && c.get('parent_category_id')) { return true; }
@@ -34,7 +36,7 @@ export default Ember.ArrayController.extend(Discourse.HasCurrentUser, {
 
   actions: {
     keyboardShortcuts: function(){
-      Discourse.__container__.lookup('controller:application').send('showKeyboardShortcutsHelp');
+      this.get('controllers.application').send('showKeyboardShortcutsHelp');
     },
     toggleMobileView: function() {
       Discourse.Mobile.toggleMobileView();

app/assets/javascripts/discourse/templates/header.hbs

@@ -87,7 +87,7 @@
         {{render "notifications" notifications}}
 
         {{#if view.renderSiteMap}}
-          {{render "siteMap"}}
+          {{render "site-map"}}
         {{/if}}
 
         {{render "user-dropdown"}}

app/assets/javascripts/discourse/templates/site-map.hbs

@@ -21,8 +21,11 @@
         <a href="{{unbound badgesUrl}}" class="badge-link">{{i18n 'badges.title'}}</a>
       </li>
     {{/if}}
+
+    {{plugin-outlet "site-map-links"}}
+
     {{#if showKeyboardShortcuts}}
-      <li><a href="#" {{action "keyboardShortcuts"}} class="keyboard-shortcuts-link">{{i18n 'keyboard_shortcuts_help.title'}}</a></li>
+      <li><a href {{action "keyboardShortcuts"}} class="keyboard-shortcuts-link">{{i18n 'keyboard_shortcuts_help.title'}}</a></li>
     {{/if}}
     <li>
       <a href="{{unbound faqUrl}}" class="faq-link">{{i18n 'faq'}}</a>
@@ -31,7 +34,7 @@
       {{#link-to 'about'}}{{i18n 'about.simple_title'}}{{/link-to}}
     </li>
     {{#if showMobileToggle}}
-      <li><a href="#" class="mobile-toggle-link" {{action "toggleMobileView"}}>{{boundI18n mobileViewLinkTextKey}}</a></li>
+      <li><a href class="mobile-toggle-link" {{action "toggleMobileView"}}>{{boundI18n mobileViewLinkTextKey}}</a></li>
     {{/if}}
   </ul>