Update Random Battle generator
Reduce Expert Belt in Random Battle

In favor of Choice Scarf. Expert Belt is now limited to mixed attackers.
Remove Protect from Rhyperior's Random Battle moves

No idea why it had that...
Prevent Air Balloon with Solid Rock in Random Battle
Update a few more Random Battle moves
Update OMs
- Removed Mediocremons and added Hidden Type
- Added missing viability rankings to /om
Forgot the mod in previous commit

Forgot to add the mod for the mega evolution bit to the format but after
testing, apparently it's not needed.
Update learnset checker

Modify 574c4528923e9d731b5239c74bacab48a89eb0e9 to only add the id if
the Pokemon has a prevo. Alphabet Cup was removed in an earlier commit.
Ban tradebacks in Gen 1 standard ruleset