Fix url on the cancel button on Topic & TopicalEvent forms
Fix url on the cancel button on Topic & TopicalEvent forms

We use [:admin, model_class] to go back to the correct index (admin_topics_path or admin_topical_events_path).

hotvulcan/whitehall,askl56/whitehall,askl56/whitehall,hotvulcan/whitehall,ggoral/whitehall,robinwhittleton/whitehall,YOTOV-LIMITED/whitehall,YOTOV-LIMITED/whitehall,askl56/whitehall,askl56/whitehall,alphagov/whitehall,YOTOV-LIMITED/whitehall,ggoral/whitehall,YOTOV-LIMITED/whitehall,alphagov/whitehall,robinwhittleton/whitehall,ggoral/whitehall,ggoral/whitehall,hotvulcan/whitehall,alphagov/whitehall,hotvulcan/whitehall,robinwhittleton/whitehall,robinwhittleton/whitehall,alphagov/whitehall