Fix gennext data syntax errors
Gulpfile: check for ES3 issues in data files
Also, remove trailing commas everywhere.
Fix randbat set generator being too reject-happy

So yeah, this is a major bug in the randbat set generator, but other
than performance issues and the random 3-move pokemon, it shouldn't
have any other implications.
Fix crash when sending '/ '
Add PU to /dexsearch