Fixes multiple slips in a row

- you can no longer slip people who are already lying down (#1784)
- walking on cleaner foam doesn’t slip you any more
- nerfs lube. You can no longer be slipped x times in a row
- when you are slipped by lube, you drop your items a few tiles before
the turf where you fall down. I can look into changing this if
requested.
- slimes can’t slip, but aliens can.
Revert "Fixes multiple slips in a row"

This reverts commit d56f5e3dd33ee03b2ab86ad98edd3f5ee99d99db.
help
Revert 4966cf3..ccb6bd2

This rolls back to commit 4966cf39136d4eb8548a597a5d38b6fd8439c3fd.
Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master'
- Adds Iatot's animations from standard cyborg to other cyborg modules.
- Toiletbot (Service borg Kent) not included.
- Renamed some cyborg sprites in robots.dmi so they make more sense/ are easier to work with.
- You don't need to hide the mob when showing an animation of it changing.
Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'origin/borgAnimations'
Merge remote-tracking branch 'upstream/master'
- Moves spells from the mob to the mind.
- Construct spells are an exception.
- Spells are transferred whenever a mind is transferred: cloning, pod cloning, borging, staff of changing.
- Spells are not transferred when you create a new mind for a new mob: soul stones, golems, respawns.

- Destroying a mindswapper's old body won't destroy the spells.
Merge branch 'spells3wip' of https://github.com/Perakp/-tg-station into spells3wip

Conflicts:
	code/game/jobs/job/civilian.dm
	code/modules/mob/living/simple_animal/hostile/statue.dm