Adds skull tank top, fixes error with russian longsleeve

That error where the longsleeve russian shirt was moved down a pixel is fixed.

Skull tank top is added and it's for all the greyshirts out there that need to tell everyone that the spiderlings are craaaawlliiiing innnnn their skiinnnnn

![clip 2014-04-19 at 11 11 46](https://cloud.githubusercontent.com/assets/7247232/2750123/9492efb6-c852-11e3-8f33-83917bd44503.png)

these wouuunds they wiiiil not heauuulllll