Add dropped flag centerprints for team/enemy
Add Sniper Rifle reload (closes #96)
Fix caltrop canister pickup message (fixes #101)
Improve W_GetSlot() function and add W_BestWeaponSlot() for simpler code
Add map specific configurations in /cfg/maps/
Keep track of current weapon when running out of ammo (fixes #97)
Remove grenades and grenade timers when game ends (fixes #87)