FIX: Add emoji-custom class in custom emojis list.

app/assets/javascripts/admin/templates/emojis.hbs

@@ -18,7 +18,7 @@
         <tbody>
           {{#each sortedEmojis as |e|}}
             <tr>
-              <th><img class="emoji" src="{{unbound e.url}}" title="{{unbound e.name}}"></th>
+              <th><img class="emoji emoji-custom" src="{{unbound e.url}}" title="{{unbound e.name}}"></th>
               <th>:{{e.name}}:</th>
               <th><button {{action "destroy" e}} class='btn btn-danger no-text pull-right'>{{fa-icon 'trash-o'}} </button></th>
             </tr>