Security Sprite updates.

Replaces all instances of the old Swat and riot sprites with Validsalad's new ones.
Replaces Sechailer's with Officer, Warden and HoS versions code and Sprites wise (Sptires by Validsalad again)

The .dmi:
http://www.ss13.eu/tgdb/sprites/w/handicapspinach/mk2masks.dmi

Ingame: (officer mask and Riot suit)

![Big scary fuzz](http://i.imgur.com/xfSfbO1.png)