removed unwanted cvars from q3_ui
frag->kill
fraglimit & capturelimit -> scorelimit
renamed some images
renamed CHARACTERIST_* -> BOT_*
*removed
  powerups
  ammo boxes
  persistant powerups (MISSIONPACK only)
  armor (pickup and stat)
  holable items
  health pickups

moved 'quantity' out of g_item and into g_weapon_t (see code/game/g_weapon.c)
use global pickup sound (for now at least, may use specific one depending on item type)

(Note to self: Don't Use Rebase!)