don't duplicate contributing universes in sidenav

Author: drusepth

app/controllers/application_controller.rb

@@ -159,7 +159,7 @@ def cache_contributable_universe_ids
     cache_current_user_content
 
     @contributable_universe_ids ||= if user_signed_in?
-      current_user.contributable_universe_ids + @current_user_content.fetch('Universe', []).map(&:id)
+      current_user.contributable_universe_ids
     else
       []
     end

app/views/layouts/_sidenav.html.erb

@@ -17,8 +17,7 @@
         </a>
         <div class="collapsible-body blue lighten-1">
           <ul>
-            <%# TODO: we should use a cache here %>
-            <% (@current_user_content.fetch('Universe', []) + current_user.contributable_universes).sort_by(&:name).each do |universe| %>
+            <% @current_user_content.fetch('Universe', []).sort_by(&:name).each do |universe| %>
               <li>
                 <%= link_to "?universe=#{universe.id}", class: 'waves-effect' do %>
                   <i class="material-icons <%= Universe.text_color %>">