Reject Head Smash with Sturdy

Donphan is mostly going to have Sturdy, so we also remove it from its move
set and replace it with some better stuff.
Nerf Articuno in Random Battles

Reduced to Level 82.
Update Balloon Fan Rotom (Rotom-Spin)

- Modified level scale so that it's less bad
- Removed Trick from its movepool because it's useless with Balloon
Merge pull request #1370 from ascriptmaster/randoms

Some random battle updates (as suggested by PS staff)