BluFor Standard Faction Update

- CHANGED version number from v3.0.3 to v3.1.0.
- CHANGED GM slotting group name from `GM` to `COMMAND`. - fixes #192
- CHANGED GM map marker name from `GM` to `COMMAND`. - fixes #192
- CHANGED PLT Leader loadout to have identical amount of UGLs as SQD Leaders. - fixes #216
- CHANGED AR ammo from `rhsusf_100Rnd_556x45_soft_pouch` to `rhsusf_100Rnd_556x45_mixed_soft_pouch`. - fixes #219
- CHANGED AAR backpack ammo from `rhsusf_100Rnd_556x45_soft_pouch` to `rhsusf_100Rnd_556x45_mixed_soft_pouch`. - fixes #219
- CHANGED Fireteam Supply Box ammo from `rhsusf_100Rnd_556x45_soft_pouch` to `rhsusf_100Rnd_556x45_mixed_soft_pouch`. - fixes #219
- CHANGED Platoon Supply Crate ammo from `rhsusf_100Rnd_556x45_soft_pouch` to `rhsusf_100Rnd_556x45_mixed_soft_pouch`. - fixes #219
- CHANGED Fireteam Supply Box ammo from `rhs_mag_30Rnd_556x45_M855A1_Stanag` to `ACE_30Rnd_556x45_Stanag_Mk318_mag` and `rhs_mag_30Rnd_556x45_M855A1_Stanag_Tracer_Red` to `30Rnd_556x45_Stanag_Tracer_Red`. - fixes #220
- CHANGED Platoon Supply Crate ammo from `rhs_mag_30Rnd_556x45_M855A1_Stanag` to `ACE_30Rnd_556x45_Stanag_Mk318_mag` and `rhs_mag_30Rnd_556x45_M855A1_Stanag_Tracer_Red` to `30Rnd_556x45_Stanag_Tracer_Red`. - fixes #220