MagePortalAnnouncer

## v2.1

- Updated for Classic Era patch 1.15.9 (interface 11509), so the addon no longer shows as out of date
- Updated for the latest client API changes so spell names, chat announces, and portal use counts keep working
- Fixed: solo portal announces to /say were silently blocked by the game. They now show the click-to-announce button instead (party and raid announces still post automatically)
- Fixed: the announce button no longer errors if the timer bars fail to load