GRN2-176: Create a role editor that allows admins to specify what permissions each role has (#709)

* Add roles editor

* Add colour selection ability to roles

* Add ability to assign roles to users in the UI

* Remove rolify and replace it with our own custom roles implemenation

* - Fix all existing roles functionality
- Fix super admins

* Fix bugs with new customers not have default roles

* Add can't create room setting

* Code improvements

* Fix migration

* Add tests for new methods

* Translate reserved role names

* Pull roles from saml/ldap

* Fix rspec

* Fix scrutinizer issues

* Fix email promoted/demoted tests

* Apply comments

* Redirect directly to the main room

* Add comments

app/helpers/rooms_helper.rb

@@ -37,7 +37,7 @@ module RoomsHelper
 
     # Does not apply to admin or users that aren't signed in
     # 15+ option is used as unlimited
-    return false if current_user&.has_cached_role?(:admin) || limit == 15
+    return false if current_user&.has_role?(:admin) || limit == 15
 
     current_user.rooms.length >= limit
   end
@@ -46,7 +46,7 @@ module RoomsHelper
     # Get how many rooms need to be deleted to reach allowed room number
     limit = Setting.find_or_create_by!(provider: user_settings_provider).get_value("Room Limit").to_i
 
-    return false if current_user&.has_cached_role?(:admin) || limit == 15
+    return false if current_user&.has_role?(:admin) || limit == 15
 
     @diff = current_user.rooms.count - limit
     @diff.positive? && current_user.rooms.pluck(:id).index(room.id) + 1 > limit