Added attack cooldowns to a few objects

Includes:
-Fire axe cabinets
-Captain's display case
-RD's lab cage
-Added cooldowns to turrets. AIs rejoice!
-Added attack cooldown for space vines and simple animals
-Reduced some duplicate code in constructs.dm
Extra period
Resolved Conflicts:
	code/modules/mob/living/simple_animal/constructs.dm
I honestly don't remember making these changes before
What is this it shouldn't be here.

It's gone now
Merge pull request #3672 from Ikarrus/casecooldown

Added attack cooldowns to some objects