Show Crowd login even when sign-in is disabled

CHANGELOG

 Please view this file on the master branch, on stable branches it's out of date.
 
 v 8.6.0 (unreleased)
+  - Show Crowd login tab when sign in is disabled and Crowd is enabled (Peter Hudec)
 
 v 8.5.0
   - Fix duplicate "me" in tooltip of the "thumbsup" awards Emoji (Stan Hu)

app/views/devise/sessions/new.html.haml

 - page_title "Sign in"
 %div
-  - if signin_enabled? || ldap_enabled?
+  - if signin_enabled? || ldap_enabled? || crowd_enabled?
     = render 'devise/shared/signin_box'
 
   -# Omniauth fits between signin/ldap signin and signup and does not have a surrounding box