Rebalanced stats for Steel ball launcher and attachments

updated log file for shield

Added portable shield

Fixed issues with weapon sounds and the smg's custom projectile

Updated log file for Impact Grenade

M2:
-Fixed additional issues with shaders:
New weapon: SB_SMG and attachments:
-2 New bases, rail and no rail
-2 barrel, grip and no grip
-2 of the same sight, one slightly lower
-2 Stocks front and back
-New firing sound

Changed bleeding effect stats

Impact Grenade: updated log file and altered stats of bleeding effect

Added Impact Grenade

Small changes to textures which shouuld improve look with shaders