PNG Stalkers v20 Full Body Door Jester

Changes:
- Door Peek now uses the full Jester body again.
- Removed the broken cut-up hand/body sprite.
- Door Jester uses vertical billboard so looking up/down should not zoom him huge into the screen.
- Door opening remains the force-open version from v16.
- Touch him = attacker spawns.
- Ignore him for 15 seconds = he leaves, no attacker.
