fixed flash messages
Fixed create user form validation
Removed email from login, users can now only login with username. Changed error alerts in create user form
Merge branch 'master' into login

Conflicts:
	app/views/admins/_new_user_form.html.erb
	app/views/admins/new_user_by_admin.html.erb
	app/views/devise/registrations/edit.html.erb
	app/views/devise/registrations/new.html.erb
	app/views/devise/sessions/new.html.erb
Removed email from login, fixed syntax error, and removed update account from system (not required by use case)
Finished validating role for user creation form
Merge branch 'login'