Add notice to redirect when destroying Urls
Add notice to redirect when destroying Urls

The create and edit action redirects have notices, so it seems
reasonable that the destroy action would have a similar notice. This
should make the app more usable.

Change-Id: Ie3c98a2952201c45858d2a8ef706be32c98ec9b0

diffux/diffux,kalw/diffux,diffux/diffux,diffux/diffux,kalw/diffux,kalw/diffux