show note when change of password is not supported
Add new round styles for avatars

- added new round styles for avatars
- cleaned up some old css rules and padding issues
show note when change of password is not supported
forbid user creation if password login is disabled
hide and disable LDAP auth if password login disabled
hide password related settings
fixes translation of footer and header
disable password-related settings in settings controller
merged dev into feature/disable_password_login_cont
fixed auth partial spec
explicitly define old settings before update

so that we can be sure they have changed (or not)
use i18n to find password settings
hide auth sources if password login is disabled and

also don't show the no-login warning for users with
external auth sources
fixed negative password example description
hide user blocking settings; link to configuration readme
updated no_login translations
use i18n in specs
edit user specs
fixed password field toggle

also dropped password change unsupported note
fixes validation of min_length, max_length