Flashbang twerks

-Flashbangs will now stun borgs.
-If you are holding the flashbang on your person when it detonates, or are in the exact tile that the flashbang is on when it detonates, your eye/ear protection is void and you take a significantly longer stun than you would otherwise.
-Flashbangs have a better falloff check than they did previously. 10 on the tile its on, 5 on the tile next to it, 3 everywhere else.
-Added span classes because I know someone will yell at me otherwise