Take out of /dashboard/milestones as the helper query clashes with kaminari arrays

app/views/shared/_milestones_filter.html.haml

-- counts = milestone_counts(@project.milestones)
+- if @project
+  - counts = milestone_counts(@project.milestones)
 
 %ul.nav-links
   %li{class: ("active" if params[:state].blank? || params[:state] == 'opened')}
     = link_to milestones_filter_path(state: 'opened') do
       Open
-      %span.badge #{counts[:opened]}
+      - if @project
+        %span.badge #{counts[:opened]}
   %li{class: ("active" if params[:state] == 'closed')}
     = link_to milestones_filter_path(state: 'closed') do
       Closed
-      %span.badge #{counts[:closed]}
+      - if @project
+        %span.badge #{counts[:closed]}
   %li{class: ("active" if params[:state] == 'all')}
     = link_to milestones_filter_path(state: 'all') do
       All
-      %span.badge #{counts[:all]}
+      - if @project
+        %span.badge #{counts[:all]}