Delete form goes to wrong context

[Jonathan Lange]

Deleting a branch returns the user to the branch owner page, rather than the page they were viewing the branch from.

To reproduce:
1. Register a branch on a project.
2. Go to the branch listing page for that project.
3. Click on the branch.
4. Click on the delete link (it's a little hard to find)
5. Click on the delete button.
6. Watch in amazement as you are redirected to your own home page.

[Tim Penhey (thumper)]

Fixed in RF 6981.