Merge and add tag descriptions for the latest image

endpoints/api.py

@@ -85,15 +85,15 @@ def get_repo_api(namespace, repository):
     }
 
   def repo_view(repository, tags = []):
-    tag_list = []
+    tag_dict = {}
     for tag in tags:
-      tag_list.append(tag_view(tag))
+      tag_dict[tag.name] = tag_view(tag)
 
     return {
       'namespace': repository.namespace,
       'name': repository.name,
       'description': repository.description,
-      'tags': tag_list,
+      'tags': tag_dict,
       'can_write': ModifyRepositoryPermission(repository.namespace, repository.name).can()
     }