hwi/HWIOAuthBundle — pull request #644 by klobermajer (2014-09-04 08:36:41+00:00)
Title: Handle situation when user doesn't accept permissions during connection process

### Problem description: ###
For example in case of Facebook, if user doesn't accept permissions it will be redirected but url will not contains code but error. In such case there will be an exception because accessToken will be null.

### My solution: ###
If access token is null, user is redirected (path can be defined in config) and error message is added to flashBag.