fix 92

- slightly increased damage for SAIGA and removed its auto-fire mode

- decreased price for MOSIN

- disabled spawning of old binoculars in loot

- added some additional infoportion restrictions to spawns in Pripyat

- added all special / quest NPCs to combat_ignore override list (so that
they use vanilla ignoring scheme)

- tweaked texts in PDA to better correspond with actual meaning

- SVD, SVU and VINTOREZ have much greater zoom after upgrade