adds armor to many objects
re-adds the clockcult floor sprite (accidentally removed in another PR)
adds clockcult effects to the clockcult floor
adds clockcult grilles
adds var/broken to /obj/structure
adds unused resistance_flags var
moves burn_state and resistance_flags to flags.dm
more updates to attack code
updated obj_defense.dm procs
renames take_damage() for organs to receive_damage()
renames Deconstruct() to deconstruct() for atmos objects
obj_integrity, max_integrity, integrity_failure vars moved to /obj level, obj_integrity = max_integrity on New()
