Restructure the config file

The snippet that bypasses the static endpoint was mistakenly added
in the Redis configuration block. This commit rectifies the issue
by moving the snippet to the app configuration block.

config.py

@@ -8,6 +8,8 @@ def app_conf():
   conf = file.read()
   conf = json.loads(conf)
   file.close()
+  if 'STATIC_ENDPOINT' in os.environ:
+    conf['cdn']['static']['endpoint'] = os.environ['STATIC_ENDPOINT']
   return conf
 
 # Get Redis configuration.
@@ -16,8 +18,6 @@ def redis_conf():
   conf = file.read()
   conf = json.loads(conf)
   file.close()
-  if 'STATIC_ENDPOINT' in os.environ:
-    conf['cdn']['static']['endpoint'] = os.environ['STATIC_ENDPOINT']
   return conf
 
 app_conf = app_conf()