Earthbreaker shouldn't wipe shadows like AOE magic

[isotor]

I have:

• [x] searched existing issues (http://github.com/darkstarproject/darkstar/issues/) to see if the issue I am posting has already been addressed or opened by another contributor
• [x] checked the commit log to see if my issue has been resolved since my server was last updated

Client Version (type /ver in game) : 30190328_2

Source Branch (master/stable) : master

Additional Information (Steps to reproduce/Expected behavior) :

Weird one since it's a magical AOE move, right?

I vaguely tried to take a crack at submitting this directly as a PR but I'm not quite sure how to update. Earthbreaker is currently defined as a MobMagicalMove with param WIPE_SHADOWS when it should be work like a multihit AOE using something like numhits.

I found a video showing Earthbreaker being absorbed by shadows twice, timestamped here: https://youtu.be/hy3GPJc3kEw?t=128 (turn your volume down) https://youtu.be/hy3GPJc3kEw?t=407

Not sure how many the max numhits should be, though if I had to bet I'd go with 3 or 5. Any help on how to slide this parameter into a MagicalMove would be appreciated.

Oh, and you can chalk up the inaccuracy to #wikifails @TeoTwawki

[isotor]

Related: unsure if this same issue should apply to it's little brother Earth Pounder but I rather strongly suspect it does.