Unisec Keypads and Fading Doors

#Changes:#

1. Reverted the previous change to faded prop physics. It was too unstable. :(
2. Fixed text in the cracker being cut off because the font is missing for some users.

#Changed Files:#

1. lua/unisec/sh_unisec.lua
2. lua/unisec/weapons/weapon_uni_cracker.lua