Inline JS of Wiki Sidebar to dispatcher

app/assets/javascripts/dispatcher.js

@@ -511,6 +511,7 @@ import PerformanceBar from './performance_bar';
               shortcut_handler = new ShortcutsWiki();
               new ZenMode();
               new gl.GLForm($('.wiki-form'), true);
+              new Sidebar();
               break;
             case 'snippets':
               shortcut_handler = new ShortcutsNavigation();

app/views/projects/wikis/_sidebar.html.haml

@@ -19,6 +19,3 @@
         More Pages
 = render 'projects/wikis/new'
-
-:javascript
-  new Sidebar();