Sniper rifle mission: Faster dynamite blow-up, also skip with precise

Sniper rifle training: Fix general camera weirdness - Camera bounced back and forth between shots - FollowGear was called every 20ms (way too often) - Now camera only re-centers when using sniper rifle - Camera also centers to dynamite once

Sniper rifle mission: Fix targets spawning twice in dynamite scenes, jacking up the total amount of targets