Revert "devise added"

This reverts commit 7bb5484fcf9078ea3e507002e71789002e8aeeb1.

Conflicts:
	Gemfile.lock
	app/models/user.rb
	app/views/devise/registrations/new.html.erb
Revert "Revert "devise added""

This reverts commit 0c2c9bcc548509b5e7a00b3f7523d5733bec9401.