randomBattleMoves is now an array, and has been renamed from
viableMoves since it no longer is used for anything other than
random battles.
This commit also does some cleanup of some code relating to
random battle moves, including fixing gen 1's randomSet function,
which apparently has never worked.
JSHint is now a fair bit stricter, and is now correctly checking
files in `mods/`.
The code has been fixed to match the new stricter standards.
JSHint has now caught its second actual bug: Gen 5 Pinap Berry
was Ice instead of Grass.