Bugfixes and Balance Part 2

-Prevents pAI drones and other small mobs from stripping people.
-pAIs no longer vanish into nothing upon death, either the card is
destroyed and robot gibs are left behind, or the pAI is disabled and its
sprite changes to reflect its death.
-pAIs drones can no longer push people around.
-pAI drones can be damaged by projectiles, this includes bullets and
lasers, being damaged by a bullet or laser will cause them to revert to
card form.
-Form switch cooldown reduced from 30 seconds to 20 seconds. 10 was too
low, but 30 was too high.