CE upstream

CE changes https://gitlab.com/gitlab-org/gitlab-ce/compare/d636efbe26ee51030bb108d889c2ef867570358a...0c36b810abede73b3cf59f951e7467dbac54ec98?expand_all_diffs=1

app/helpers/todos_helper.rb

@@ -61,6 +61,10 @@ def todos_filter_params
     }
   end
+  def todos_filter_empty?
+    todos_filter_params.all? {|key, value| value.nil?}
+  end
+
   def todos_filter_path(options = {})
     without = options.delete(:without)