[Edit] Allow inline-editing the name only if the object is editable

Made the contenteditable attribute conditional based on whether the object can be edited or not. If the object is not editable, the attribute is removed.

Add Tests.

Fixes #1746

platform/commonUI/browse/res/templates/browse/object-header.html

@@ -22,7 +22,7 @@
 <span class='type-icon flex-elem {{type.getCssClass()}}'></span>
 <span class="l-elem-wrapper l-flex-row flex-elem grows" ng-controller="ObjectHeaderController as controller">
     <span ng-if="parameters.mode" class='action flex-elem'>{{parameters.mode}}</span>
-    <span contenteditable="true" 
+    <span ng-attr-contenteditable="{{ controller.editable ? true : undefined }}"
 		class='title-label flex-elem holder flex-can-shrink s-input-inline'
 		ng-click="controller.edit()"
 		ng-blur="controller.updateName($event)"