Undershirts and jumpsuit overhaul

I added undershirts. They are not underwear because you will need to mix and match them more often than not, even if there is a small selection right now. Think of why facial hair doesn't use the same code as hair and is colored seperately (it probably shouldn't be but whatever). I massively improved their sprites, too.

First, undershirts. 
![ss 2014-10-08 at 09 50 29](https://cloud.githubusercontent.com/assets/7247232/4563160/3694a02c-4f0b-11e4-8e29-0b75e6bbf23c.png)
(Midriff is the tankini tank top converted to an undershirt)
Now these undershirts have been taken from various places, Frankenstein'd from bay12's and NT's. The jumpsuit changes; Well, 80% of the jumpsuits have undershirts IN THE SPRITES THEMSELVES.

You can see it here.
![ss 2014-10-08 at 09 35 48](https://cloud.githubusercontent.com/assets/7247232/4563186/7f1b3e64-4f0b-11e4-938a-d42f8547c515.png)

I started by removing the undershirt from ALL of the jumpsuits, except some gimmick ones like The Owl and a lot of the formal shirts which don't have them.

![ss 2014-10-08 at 09 35 58](https://cloud.githubusercontent.com/assets/7247232/4563190/8d311d20-4f0b-11e4-849c-f6247afe0d20.png)

Then, I modeled the undershirts after the undershirts that were on the jumpsuits themselves:

![ss 2014-10-08 at 09 36 06](https://cloud.githubusercontent.com/assets/7247232/4563197/9ceedd2e-4f0b-11e4-92ec-9dc924415ece.png)

Final product:
![ss 2014-10-08 at 09 36 20](https://cloud.githubusercontent.com/assets/7247232/4563198/a01fec18-4f0b-11e4-8e38-868fde313407.png)