Further minor balancing and bugfixing.

- Added H&K MG36 Squad Automatic Weapon variant of G36. It is a Tier 3 non-cumbersome Machine gun with high customization range.

- Rebalanced shotguns, increasing their overall viability.

Further minor bugfixes and balancing.

Weapons sound FX edited to make sure every caliber is recognizable by the sound it makes.

Further minor balancing and bug fixes.

Further minor balancing and bug fixes.

Further minor balancing and bug fixes.

- 7.62x51mm NATO battle rifles such as M14 and FN FAL now do not have 3-round Burst fire, only Autofire, to balance out their high damage, simulating real-life uncontrollability of their automatic fire.
- To compensate the change a bit, Autofire now shoots 6 unaimable rounds, instead of previously 5 unaimable rounds. 3-round Burst fire is still aimable and can be potentially used to target 2-3 separate targets in one turn, which Autofire cannot.

Added 3 new gun variants with accurate custom UI icons:
- Galil SAR has replaced the original Galil ARM. The shorter barrel SAR has lower AP cost to shoot, while losing some range
- the classic M14 is back to take Galil ARM's place as an older low customization 7.62x51mm NATO battle rifle. The M14A1 SAW is still available as a non-cumbersome Machine Gun
- FN FAL Para is now available as a shorter barrel folding stock variant of the original FN FAL, again at lower AP costs. The latter now only has a fixed stock and a long barrel, adding to its accuracy and range

*Thanks to Grendelin for suggestions and feedback

Lowered AP costs for shotguns.