RegistrationsController#create deals with validation errors. Username, email, password now required on sign-up.

For fedora, splits off the wsd daemin in separate package. Overall,
tools to handle bad Gemfile.lock README notes, -f option to invoke
'bundle update' in make-dist.sh. Minor bugfixes

Remove RegistrationsController#new (which just called super, so it's not necessary).

Conflicts:
	app/views/invitations/_new.haml