First attempt at making config loadable through string config overrides in an env variable.

endpoints/api/image.py

@@ -2,16 +2,13 @@ import json
 
 from collections import defaultdict
 
-from app import app
+from app import storage as store
 from endpoints.api import (resource, nickname, require_repo_read, RepositoryParamResource,
                            format_date, NotFound)
 from data import model
 from util.cache import cache_control_flask_restful
 
 
-store = app.config['STORAGE']
-
-
 def image_view(image):
   extended_props = image
   if image.storage and image.storage.id: