added placeholder details for all active abilities
renamed the wizard from Raistlin to Sheena. I know these are just placeholder names, but Raistlin is a man, and this sprite is clearly not a man.
fixed a bug where clicking outside the game window while aiming would throw an exception
changed how the targetting grid works. i was not thrilled with the previous setup, where it simply marked a bunch of cells as selectable and when you clicked one it, would fire off the ExecuteAimAbility call. i felt this was asking for trouble, since the BattleBoardLayer had no way to remember what the targetting grid was. and since the cell type can shfit between selectable, targetted and splashed quite freely, it would get awkward. now, a concrete pair of grids (targetting/impact), and a center point (which i'm so-so on, i'll probably refactor this out in time) is passed over and remembered, so the BattleBoardLayer can always redraw the same grids. this also seems to fix the bug where cells would 'stick' to being targetted even though the cursor left.
Merge remote-tracking branch 'origin/master'
integrated new cleric artwork into the game