Final little fixes

AKM cost fixed
Some minor tweaks in Insurgents waves

This could be the last update :)

Various fixes for KSG and VHS2 optics

Changed again the Tactical Operator skin, TOZ is a little less powerfull now. Special secondary weapons now cost more.

Changed colors for Tactical Op to avoid friendly fire (I hope at least)

- more VHS2 fixes

- Optimization for VHS2
- Fixed M4 adn MK18 ammo

- Added VHS as high end option for Breacher and Demolitions
- Gas granade balancing and fixes
- Other minor things