Move standard login form to the auth settings where users expect them.
Improve the documentation of the signup item, password items is outdated now since people are used to the behaviour.
Merge branch 'better-location-for-signin-disable' into 'master'

Better location for signin disable

Make it easier for people to find these settings where they are expected, under auth settings.
Merge branch 'master' of github.com:gitlabhq/gitlabhq