Only create a slug after a media upload via the API when there is a title

mediagoblin/federation/views.py

@@ -301,6 +301,7 @@ def feed_endpoint(request):
                     return json_error(
                         "Invalid 'image' with id '{0}'".format(obj_id)
                     )
+                image.generate_slug()
                 image.save()
 
                 activity = {

mediagoblin/submit/lib.py

@@ -286,9 +286,6 @@ def api_upload_request(request, file_data, entry):
 
 def api_add_to_feed(request, entry):
     """ Add media to Feed """
-    if entry.title:
-        entry.generate_slug()
-
     feed_url = request.urlgen(
         'mediagoblin.user_pages.atom_feed',
         qualified=True, user=request.user.username