Traitor balance

Another Traitor balance patch

Traitor gear:
-Reduced the cost of crossbows to 5 from their previous 7.
-Adds the Stechkin Pistol+Ammmo+silencer to be purchased by all traitors
-Increased the cost of the C-20r slightly
-Dramatically increased the cost of the machine gun
-Viscerators removed from regular traitors and moved to nuke ops only (they should not attack fellow ops)
-Adds in DNA scrambler (cheap alternative to ID+voice changer)
-Adds in PDA tracker (track down any PDA!)
-removes energy shields from nuke ops closets and puts them on the uplink for a cost
-Gives nuke ops a chem sprayer with some really nasty reagents in it
-Syndi minibombs. Grenade with a 5 second fuse; decent sized boom for the cost
-Chameleon stamp....this can mimic any stamp there is; perfect for approving that crate no one would ever give you!

Reagent nerfs:
Chloral hydrate is no longer an insta-knock out; it will work very quickly, but won't be an "I win" chem.

These changes are plucked from VG and TG both.