Provide an application link for the Macro PHID type
Summary: Ref T9625. This is an example of how to fill in the missing calls.
- Verified that an icon is now shown for feed stories.
- Verified that an icon is now shown in the "PHID Types" module panel in Config.
Reviewed By: chad
Maniphest Tasks: T9625
Differential Revision: https://secure.phabricator.com/D14324