added disable password option
don't show password login form in sign-in drop down
hide password login forms
block password-related functionality (e.g. lost)
explicitly require OmniauthLogin to prevent load error
spec: don't show "change password" menu entry
spec: post login with disabled password login
fixed allow_registration?
make omniauth developer strategy work again
disable password-based login in user model
spec registration with disabled password login
spec: hide password forms
enable override through env of disable password login

and omniauth_direct_login_provider
ensure omniauth registration works with disabled pwd login
properly qualify OmniauthLogin everywhere
fixed last broken OmniauthLogin reference
deny password change if password login disabled
put #disable_password_login? into OP Configuration
fixed specs after moving #disable_password_login?
Merge pull request #1620 from opf/feature/disable_password_login

Feature: disable password login