ability targeting consistency

[DreadKnight]

Vehemoth's basic attack is a bit inconsistent regarding targeting, as it shows dashed hexagons.

Good thing is that it gives new players a better idea of the targeting area, somewhat related to #970 and even #1772
Bad thing is that it adds more clutter visually and it's different.

So would either fix by removing dashed hexagons or make that a consistent thing for all abilities, maybe even as part of #1469