Summary: Added `PhabricatorBuiltinPatchList` entry so that "storage upgrade" will update the database. Renamed and numbered the notification.sql patch.
Test Plan: Drop phabricator_feed.feed_storynotification table if it exists and run bin/storage upgrade to check if the patch is correctly applied.
Reviewers: epriestley, btrahan, allenjohnashton
Reviewed By: epriestley
CC: ddfisher, aran, Korvin
Differential Revision: https://secure.phabricator.com/D2687
