Revert "change import syntax"

This reverts commit 0c6ce39a.

src/graphql/resolvers.js

@@ -11,9 +11,9 @@ import './../config_passport';
 
 import authenticator from '../graphql/authenticator';
 
-import connectors from './connectors/connectors';
+import * as connectors from './connectors/connectors';
 import * as list_selectors from './connectors/list_selectors';
-import authentifiers from './connectors/authentifiers';
+import * as authentifiers from './connectors/authentifiers';
 import MessageResolvers from './resolvers/messages';
 import GroupResolvers from './resolvers/groups';