Adds a new statue hostile mob!

This hostile mob is very much like other monsters that move/kill you when you don't look at them.
This mob is also designed to be player controlled and has spells to get around the 360 vision problem, such as flickering lights and causing people around it to go blind for a short duration.

CANPUSH is now used by simple_animals
Added 4 directional sprites for the statue.
Merge branch 'master' of https://github.com/tgstation/-tg-station into spooky_scary_statues
Fixed statues trying to attack mice behind walls.
Buffed their speed and damage.
Reduced their vision range a bit.
Statues will now attack nearby mobs when after a target.
Changed their name and description so they almost match with the ordinary statues.
The statue will call dust() when gibbed.
Increased the range of blind() so mobs just outside his can_be_seen() check won't stop it from blinding them.
Added a client check for AI stuff.
Reverted the accidental tick for ministation.dm
Merge pull request #2666 from Giacom/spooky_scary_statues

Adds a new statue hostile mob!