Stability update to fix bugs mass-reported by Sentry. Thank you for helping with catching them.

- fixed the burris scope
- fixed grenades
- fixed MP5 NVG aim
- fixed a popular server error
- possible FPS boost
- new error when the import setup key is too long
- fixed a bug with general gun interaction
- several client error fixes
- fixed a bug related to toggling the flashlight/laser with the glock
- fixed a bug that made NVG overpowered by disabling the overlay
- the game shouldnt melt to pieces when you try to switch from a broken gun to another one now
- incompatibility now works properly