Stop controller tests from connecting to Flickr

... by stubbing out Member#flickr_sets in a photo_controller test. I
looked at the flickrmocks gem, but it doesn't seem very helpful - it
still requires you to connect to Flickr.

spec/controllers/photos_controller_spec.rb

@@ -27,6 +27,7 @@ describe PhotosController do
       @member = FactoryGirl.create(:member)
       sign_in @member
       @member.stub(:flickr_photos) { [] }
+      @member.stub(:flickr_sets) { [] }
       controller.stub(:current_member) { @member }
       @auth = FactoryGirl.create(:flickr_authentication, :member => @member)
       get :new, {}