Fix the test for where extended image properties should come from. Fix the delete tag dialog to specify that the repo will be gc'ed after tag deletion.

endpoints/api.py

@@ -1084,7 +1084,10 @@ def delete_repository(namespace, repository):
 
 
 def image_view(image):
-  extended_props = image.storage or image
+  extended_props = image
+  if image.storage and image.storage.id:
+    extended_props = image.storage
+
   command = extended_props.command
   return {
     'id': image.docker_image_id,

static/partials/view-repo.html

@@ -254,7 +254,7 @@ sudo docker push quay.io/{{repo.namespace}}/{{repo.name}}</pre>
         </span>?
 
         <div ng-show="tagSpecificImages(tagToDelete).length" style="margin-top: 20px">
-          The following images will also be deleted:
+          The following images and any other images not referenced by a tag will be deleted:
           <div class="image-listings">
             <div class="image-listing" ng-repeat="image in tagSpecificImages(tagToDelete) | limitTo:5"
                  ng-class="getImageListingClasses(image, tagToDelete)">