Add some style to label in Favorites Menu

Summary: Ref T12174. Always sets the correct type when converting to ActionList, adds a type to Divider.

Test Plan:
Add a Label, 2 applications to the personal favorites menu, see nice styles.

{F2554901}

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: Korvin

Maniphest Tasks: T12174

Differential Revision: https://secure.phabricator.com/D17285