FIX: Broken `{{if}}` statement

app/assets/javascripts/discourse/controllers/user.js.es6

@@ -15,6 +15,11 @@ export default Ember.Controller.extend(CanCheckEmails, {
     return username === User.currentProp('username');
   },
 
+  @computed('model.profileBackground')
+  hasProfileBackground(background) {
+    return !Ember.isEmpty(background.toString());
+  },
+
   @computed('indexStream', 'viewingSelf', 'forceExpand')
   collapsedInfo(indexStream, viewingSelf, forceExpand){
     return (!indexStream || viewingSelf) && !forceExpand;

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

@@ -1,6 +1,7 @@
 <div class="container{{if viewingSelf ' viewing-self'}}">
   <section class='user-main'>
-    <section class="{{if collapsedInfo 'collapsed-info'}} about {{if model.profileBackground 'has-background' 'no-background'}}"  style={{model.profileBackground}}>
+
+    <section class="{{if collapsedInfo 'collapsed-info'}} about {{if hasProfileBackground 'has-background' 'no-background'}}"  style={{model.profileBackground}}>
     {{#unless collapsedInfo}}
     <div class='staff-counters'>
       {{#if model.number_of_flags_given}}