Various fixes and improvements (#12878)

* Fix unused role routes being generated

* Remove unused JavaScript code

* Refactor filters code to be DRYer

* Fix `.count == 0` comparisons to `.empty?` in views

* Fix filters in views

1 files changed, 1 insertions, 1 deletions

diff --git a/config/routes.rb b/config/routes.rb
index 5411cff58..ff308699d 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -231,7 +231,7 @@ Rails.application.routes.draw do
         end
       end
 
-      resource :role do
+      resource :role, only: [] do
         member do
           post :promote
           post :demote