Implement getHelpURI() for new applications

Summary: A bunch of recently-created applications have help available; link to it.

Test Plan: Clicked each app, clicked help link in menu bar, ended up in relevant documentation.

Reviewers: vrana, btrahan

Reviewed By: btrahan

CC: aran

Differential Revision: https://secure.phabricator.com/D3602

src/applications/base/PhabricatorApplication.php

@@ -77,13 +77,8 @@ abstract class PhabricatorApplication {
   public function getHelpURI() {
     // TODO: When these applications get created, link to their docs:
     //
-    //  - Conduit
     //  - Drydock
-    //  - Herald
     //  - OAuth Server
-    //  - Owners
-    //  - Phame
-    //  - Slowvote
 
 
     return null;