Update formats.js

- Added the new OM of the Month: Almost Any Ability
- Reordered the OMs with the non-ladder ones sorted alphabetically
- Added Pokemon and HP Percentage Mod rules to Custom Game for gens 1-4
- Updated bans for OMs
- Added more incompatible movesets for gen 1
Update Mewtwo's gen 1 moves

It is impossible for Mewtwo to legitimately learn Confusion or Disable
as those moves are learnt at level 1, Mewtwo is obtained at level 70,
and there is no move relearner in RBY