Redirect users back to where they added an SSH Key

Summary: Ref T12964. This feels like a cheat, but works well. Just redirect the user back to the form they came from instead of to the key page.

Test Plan: Add a key to a user profile, add a key to an Alamanac device. Grep for PhabricatorAuthSSHKeyTableView and check all locations.

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: Korvin

Maniphest Tasks: T12964

Differential Revision: https://secure.phabricator.com/D18445

src/applications/auth/controller/PhabricatorAuthSSHKeyEditController.php

@@ -93,7 +93,7 @@ final class PhabricatorAuthSSHKeyEditController
 
       try {
         $editor->applyTransactions($key, $xactions);
-        return id(new AphrontRedirectResponse())->setURI($key->getURI());
+        return id(new AphrontRedirectResponse())->setURI($cancel_uri);
       } catch (PhabricatorApplicationTransactionValidationException $ex) {
         $validation_exception = $ex;
         $e_name = $ex->getShortMessage($type_name);