FIXED: Uncertainty boxes display

I run with the web client a lot (convenient for testing) and with that client the uncertainty boxes for traps didn't really look like boxes--they looked more like minuses. (I think this display glitch may have been more pronounced on the web client because the outline of filled boxes appears to be a lighter shade of orange..)

Anyway, I just increased the vertical height of the uncertainty boxes so they actually look more like boxes.