New modifications to SCP-173

- SCP can no longer be put into lockers. I had to modify the locker file
since all unlockerable objects already use that method
- He'll now take a LITTLE time to break down windows, which gives some
time for the target to wake up
- Can now open all doors naturally
- Sight was fixed, should now be perfect

Some things can still be fixed, notably you can still just get a
braindead to look at SCP to shut him down, but at least you can't
cremate SCP or weld him into a locker anymore
Revert "Update twohanded.dm"

This reverts commit 5a26f0d74e019ed3060569d9013d680aacdb2351.
Revert "Update tools.dm"

This reverts commit 032cacc511189c16780e6fe5b74058ad00847d14.