Merge pull request #2 from edthebat/master

A few tweaks
Experience toggle added!

Can now disable gain of experience from the new Terrorists! Options
menu.
Shell casing lifetime added
Civilians should no longer be auto-aimed
Weapon recoil slider added
Weapon experience overhauled.

New options to adjust scaling among others.
Grenade upgrade added; fixes to weapon exp again
Enemy drop rate changes

Bombers now drop grenade upgrades; taser guys drop batteries slightly
more often; default grenade exp increased slightly
Added 1/2 Default option for weapon exp.
Recoil fix

Grenade launcher now respects recoil setting
Merge pull request #2 from wildweasel486/master

Synchronize with original