Updating to support latest version 1.201

Updating to support latest 1.200 game version.

Correcting smoke cluster munition.

Adding new Artillery Units improvements for accuracy.
New Artillery cluster munition.

Fixing textures not available in SP missions.
Ammo cases will explode if vehicle runs over them.

Resizing inventory for some vehicles to fit in new ammo cases.

Three kinds of ammo cases to resupply items: small arms, grenades and explosives.
Updating inventory of vehicles to contain new ammo cases.

Updating for game version.

Some balancing changes with Rebels not having access to good weapons.
Spread out availability of grenade launchers among all factions to give everybody a chance to use them.