util/Array: Remove warncount member
Remove useless p_laby_screen2()
Rename p_playsound to playSound
Remove useless p_sound()
Move loading of sprites and sounds away from pak module
Add laby_assert
Replace some throw; with laby_assert
simplify playSound()
util/Array: Replace throw; with laby_assert
Replace last remnants of throw; with laby_assert