Changes

Server: New weapon checking logic

This allows us to check for shotgun and at the same time
dont allow multibullet with it. There may be optimizations
for this later.

Cleaned up by DarkNeutrino
 (commit: 2d3c2e2)

WeaponInput.c: Do not allow weapon input of primary fire when reloading

As title says. It makes no sense. Player cant reload and shoot at the same
time. And if they do so. Its most likely cheatong amd thus lets prevent this
from causing us any issues.
 (commit: 71323f1)

PacketManager.c: Do not allow any sort of hit from player that is reloading

Sometimes stuff like this doesnt even occur to me that players could
do this with modified client and we do not even check for it.
 (commit: 0f18341)

Server: Do not allow next shot if its invalid
 (commit: f62e580)