This makes it consistent with the Invalid email/password error message
from the previous step.

Also adds test case for providing an invalid 2FA code and then a valid
one without re-entering username and password.

"Two-factor" vs. "2-Factor"

Turn 2-factor authentication into 2 steps process. Disabled 2fa UI for ldap users since it is not supported

Remove class and id attributes from SanitizationFilter whitelist

Closes internal https://dev.gitlab.org/gitlab/gitlabhq/issues/2302

See merge request !631

Fix Firefox problems when it wants to render issuable component

Move project visibility from clone bar to repository details block for non empty project.

See merge request !1818