Results in a little more code, but each path is less tangled
simplify some expressions
remove RBDragonair content in favor of a strict filter for catch rate
Move gen1 trade trainer names to stringconverter, since pk1/pk2 shouldn't refer to legality classes
Now logic is reasonably split, and each format of area has its own way
of yielding slots
Too much junk with checking flute boosts or catch combo applicability;
just let the area dictate how slots match.
