Add new guns and remove some on WS 2.0

[Evil Sniper Fou 1]

Hello, Add new guns :V-94 Volga and VVS Vintorez to Sharpshooter perk, Dual MP7 to Akimbo perk, Buster Sword to Berserker perk, PP19 BIZON (Explosive bullets) to Demolition perk and Gauss Rifle to Hunter perk.

About removing guns,  from Support perk, Vlad the Impaler, from Commando perk H&K G36C and from Demolition perk L.A.W + M4 203.

Also visual on AKS74 Assault Rifle  when you play at 3rd person is invisible, we see the gun only when you play at 1rst person. As you can see in 3rd person, the gun is invisible, we only see the shadow of the skin on floor.