[Context] Back Arrow

Checks the Back Arrow in both checkRoot and
navigateToParent, also checks grandparent in both.
This allows the back arrow to hide in search when
context is unavailable.

platform/commonUI/browse/res/templates/back-arrow.html

@@ -23,6 +23,6 @@
 <!-- Back Arrow Icon used on mobile-->
 <a ng-controller="BrowseController"
       class='type-icon icon ui-symbol s-back'
-      ng-click='backArrow()'
-      ng-class="checkRoot(); atRoot ? 'hidden' : ''">{
+      ng-class="checkRoot(); atRoot ? 'hidden' : ''"
+      ng-click='backArrow()'>{
 </a>