wrote the filter. The actor create is not working sadly
added a possibly working filter
secured the post update aswell
Merge branch 'master' into authenticate_own_user

Conflicts:
	app/controllers/actor_controller.rb
create actor now iterates over the information passed from the form

validation of required fields needs to be done as soon as as issue#9 is implemented
Merge branch 'refs/heads/master' into csv_import