FEATURE: If you don't select any topics to "Dissmiss Read" it does all

by filter.

spec/controllers/topics_controller_spec.rb

@@ -791,7 +791,7 @@ describe TopicsController do
       let(:operation) { {type: 'change_category', category_id: '1'} }
       let(:topic_ids) { [1,2,3] }
 
-      it "requires a list of topic_ids" do
+      it "requires a list of topic_ids or filter" do
         lambda { xhr :put, :bulk, operation: operation }.should raise_error(ActionController::ParameterMissing)
       end