*: fix legacy imports

This change reorganizes imports and renames the legacy flask extensions.

endpoints/gitlabtrigger.py

@@ -1,7 +1,9 @@
 import logging
 
 from flask import Blueprint, request, redirect, url_for
-from flask.ext.login import current_user
+from flask_login import current_user
+
+import features
 
 from app import app, gitlab_trigger
 from auth.auth import require_session_login
@@ -10,13 +12,12 @@ from data import model
 from endpoints.common import route_show_if
 from util.http import abort
 
-import features
-
 
 logger = logging.getLogger(__name__)
 client = app.config['HTTPCLIENT']
 gitlabtrigger = Blueprint('gitlab', __name__)
 
+
 @gitlabtrigger.route('/gitlab/callback/trigger', methods=['GET'])
 @route_show_if(features.GITLAB_BUILD)
 @require_session_login