CE upstream

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

app/controllers/search_controller.rb

@@ -16,7 +16,7 @@ def show
       @group = nil unless can?(current_user, :read_group, @group)
     end
-    return if params[:search].nil? || params[:search].blank?
+    return if params[:search].blank?
     @search_term = params[:search]