Activate the new Repository creation workflow

Summary:
Ref T2231. This:

  - Activates the new multi-step workflow, and exposes it in the UI.
  - Adds "can create", "default view" and "default edit" capabilities.
  - Provides a default value for `repository.default-local-path` and forces repositories into it by default. It's still editable, but Phabricator gets it correct (for some definition of correct) by default now.

Test Plan: Created some new repositories with the new workflow.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T1286, T2231

Differential Revision: https://secure.phabricator.com/D7413

src/applications/diffusion/application/PhabricatorApplicationDiffusion.php

@@ -103,4 +103,17 @@ final class PhabricatorApplicationDiffusion extends PhabricatorApplication {
     return 0.120;
   }
 
+  protected function getCustomCapabilities() {
+    return array(
+      DiffusionCapabilityDefaultView::CAPABILITY => array(
+      ),
+      DiffusionCapabilityDefaultEdit::CAPABILITY => array(
+        'default' => PhabricatorPolicies::POLICY_ADMIN,
+      ),
+      DiffusionCapabilityCreateRepositories::CAPABILITY => array(
+        'default' => PhabricatorPolicies::POLICY_ADMIN,
+      ),
+    );
+  }
+
 }