Updated searchfield update when an actor is saved. Only "searchable" information is added to the searchfield. The functionality that only public information is added is not implemented yet
update_searchfield works fine
clean-up: Deleted Gemfile~ and ActorErstellen~
Admins can add actors now
Merge remote-tracking branch 'origin/master' into refactoring_urs (UNTESTED!)

@rbreu: admins don't have actors

Conflicts:
	app/models/actor.rb
	app/models/admin.rb