Merge pull request #12446 from edx/ibrahimahmed443/WL-449-asset-image-fix

WL-499 Fix the issue where images do not appear when set through asset linki…

cms/static/js/views/settings/main.js

@@ -305,6 +305,8 @@ var DetailsView = ValidatingView.extend({
         this.setField(event);
         var url = $(event.currentTarget).val();
         var image_name = _.last(url.split('/'));
+        // If image path is entered directly, we need to strip the asset prefix
+        image_name = _.last(image_name.split('block@'));
         this.model.set(image_field, image_name);
         // Wait to set the image src until the user stops typing
         clearTimeout(this.imageTimer);