[NAG] Lots of change III

- Fix SSE
- Muzzle flash rework
- CSS weapon support
- No more LowViolence
- weapon_sniper fix
- Increase save screen size
- Little AI change
- Fix blood color on headshot
- Increase bullet wizzdist
- Add bullet ricochet, divide in piece and increase penetration distance
- Increase overhaul NPC maxRange
- Drop weapon
- Gib : fix velocity, blood color, sound hit
- Increase mine effectivity
- Add only 1 weps by bucket
- Decrease walk/sprint speed
- Add particle for NPC command goal
- Randomize Ammo quantity for item_ammo
- Add speed modification for NPC : Speed up overhaul and speed differ
with the weps carried
- Fix NPC profiency
- Fix weapons recoil
- Add blood effect and sound on ragdoll
- Add health regeneration
- Add SOUNDENT_VOLUME_SNIPER and modify other define value
- Add piece of wall on grenade explosion
- Change dmg inflict scale and ammo qty
- Decrease rollangle
- Begin trying add HTML VGUI support