WW2 rifle tweaks and halftrucks

[Bzdziuch]

The first thing that bothers me in WW2 PR is that the K98 aim down the sights animation seems very sluggish to me.

My suggestions:
- keep M1 and K98 both 1 shot kill weapons
- keep M1 in its current form
- make K98 aim down the sights animation quicker to to offset the need to cycle the action

The overall balance of americans having semi auto rifles and worse squad automatic weapons while the germans have bolt actions and superior machineguns should be upheld.

2nd thing is that the halftrucks are useless. While nothing can be done with their fighting potential I think they should carry more ammo crates to fit their role of infantry transport/support. The enormous hannomag can fit only 1 puny ammo crate while the ammo technical can transport 3 of them. Please give the halftrucks the same crate capacity as the transport truck (1 light crate, 2 ammo crates).