Cheek Pouch + Natural gift fixes

There's no actual message in game for Cheek pouch, just shows "Dedenne's Cheek Pouch" then restores HP. So I wrote one that tells the players what is occurring, otherwise it just randomly recovers HP with no notification.

Also Cheek Pouch doesn't work with Natural Gift, nor should Belch (Fixing a bug and found another bug that gets fixed the same way)