Too many classes in the same file, break up.
simplify things a little in EncounterArea (remove passing thru nulls,
should throw excpetion immediately if misconfigured).
* Fix minlevel of Pangoro/Tyrantrum/Aurorus in gen6
30: level + dark type in the party
32: level + day
33: level + night
34: level + female
Note Meowstic isn't affected due to another entry of level + male (23)
* Minor text usage fix
* Fix xorPID flipping in TransferEC check
