New changes to sculpture (SCP-173)

Many, many changes. Most notably :

- Mobs on the same tile as the sculpture can no longer "see" it, this
effectively fixes the problem that made SCP laughably innefective
- SCP-173 now causes an instant incacipation when grabbing someone (IC
snaps their neck, OOC does 105 damage)
- He also teleports away to fix a problem with him grab-spamming dead
people when out of nearby targets
- Teleport range increased to make his idle strolling more hazardous and
less prevesible
- Other modifications. Overall the code was jury-rigged but was tested
and is functional