Documentation - Adding documentation links to the About page now that
the footer has been removed.
Reenable chance to login for not existing users

When you use LDAP and you try to login using Signo but the user does not
already exist in Katello database you should not end up in error page.
With this patch you are redirected to login page when you can enter
credentials again. Once you login using katello form you are able to use
Signo in future.
lib-migration - create candlepin env for existing Library envs
Runcible - Re-running tests due to an upgrade in Runcible.
Merge pull request #2285 from ehelms/runcible-test-fix

Runcible - Re-running tests due to an upgrade in Runcible.
Merge pull request #2248 from ehelms/documentation-links

Documentation - Adding documentation links to the About page now that
Merge pull request #2282 from thomasmckay/lib-migration

lib-migration - create candlepin env for existing Library envs
Merge pull request #2270 from ares/bug/ldap_login_not_existing_users

Reenable chance to login for not existing users