Fixed MR count on dashboard

app/views/layouts/application.html.haml

@@ -15,7 +15,7 @@
         = nav_link(path: 'dashboard#merge_requests') do
           = link_to dashboard_merge_requests_path do
             Merge Requests
-            %span.count= current_user.cared_merge_requests.count
+            %span.count= current_user.cared_merge_requests.opened.count
         = nav_link(path: 'search#show') do
           = link_to "Search", search_path
         = nav_link(path: 'help#index') do