fix 95

- disabled 3rd ammo type for DESERT EAGLE attempt to spawn on NPCs

- added two separete mechanism to clear trader inventories from sold
items:

* traders can no longer 'sell' items which they do not have normally in
their stock which makes such items dissappear on save / load as in
vanilla
* added a trader_release script mechanism from Yasti which makes all
weapons with condition lower than 100% to get cleared after few seconds
after sell

- cleared faulty silencer affinity change after weapons caliber change
thru upgrade as it was causing crashes

- changed Exoskeleton sold by Nimble to Bulat suit