add django-simple-friends app
add messages for request friend(buddy)
add accepted/declined/canceled signals
add real buddy_list in invitee auto complete list
make request add buddy can be cancel
Merge remote-tracking branch 'origin/dev' into django-simple-friends

Conflicts:
	pencilme/events/urls.py
Merge pull request #23 from xHFT/django-simple-friends

Django simple friends