Update UU suspects

Staraptor -> BL
Tornadus-T -> UU
Update /om
Update Other Metagames

- Added new OM of the Month: Mediocremons
- Replaced OU Theorymon with Pokemon Throwback
- Added Almost Any Ability ladder
- Removed Ability Exchange
- Reordered OMs to match /om all
Add missing '/' in unrecognized command message

Using '//' would begin a message with '/' and the message should reflect that accurately.
Add missing '/' in showtan message

Same as other commands.
Merge pull request #1046 from Relados/patch-1

Add missing '/' in unrecognized command message