Flesh out more web UI actions for new URI interface

Summary:
Ref T10748.

  - Allow users to add new URIs by clicking a button instead of knowing a secret URI.
  - Validate that URIs are actually valid URIs.
  - Add enable/disable action and strings.

Test Plan:
  - Created a new URI.
  - Tried to create a nonsense URI, created a good URI.
  - Enabled/disabled a URI.

Reviewers: chad

Reviewed By: chad

Maniphest Tasks: T10748

Differential Revision: https://secure.phabricator.com/D15825

src/applications/diffusion/application/PhabricatorDiffusionApplication.php

@@ -93,6 +93,8 @@ final class PhabricatorDiffusionApplication extends PhabricatorApplication {
             => 'DiffusionRepositoryManageController',
           'uri/' => array(
             'view/(?P<id>[0-9]\d*)/' => 'DiffusionRepositoryURIViewController',
+            'disable/(?P<id>[0-9]\d*)/'
+              => 'DiffusionRepositoryURIDisableController',
             $this->getEditRoutePattern('edit/')
               => 'DiffusionRepositoryURIEditController',
           ),