added avatar field for uploaded image and set default value for gravatar (email)
profile edit form now shows gravatar and file upload field
Avatar files are being uploaded, default data dir is app/data/avatars
Uploaded file now is being validated as Image
Merge branch 'master' into avatar-upload
Merge branch 'master' into avatar-upload
Added the upload_avatars parameter to parameters.yml-dist
Implemented image wrapper method
Merge pull request #110 from erikaheidi/avatar-upload

[avatar-upload] Base for the new avatar feature
Merge branch 'avatar-upload' of github.com:CoBase/cobase into avatar-upload
Initial version of notification added.
Show saved avatar instead of gravatar if avatar exists
Modified label
Added avatar handle to user's view page as well
Added avatar handle to missing places
Merge remote-tracking branch 'origin/master' into email-is-sent-when-new-post-in-group

Conflicts:
	composer.json
	composer.lock
	src/Cobase/AppBundle/Controller/BaseController.php
	src/Cobase/AppBundle/Controller/GroupController.php
Removed invalid code (copy-paste from some other project)
Fixed invalid DI service settings. Now it is possible to select a group that you want to be notified of new posts (also unnotify feature)
Changed method signature
Added PostEvent entity + migrations