Additional t-shirt info on site.

[energydev]

Add links to the below sizing sites for American Apparel. https://www.americanapparel.net/sizing/default.asp?chart=mu.shirts
https://www.americanapparel.net/sizing/default.asp?chart=womens.shirts

[energydev]

Might have two link texts of "Unisex sizing" and "Ladies' cut sizing"

[jagthedrummer]

This may or may not apply depending on what the membership campaign looks like for 2017. I'm just going to leave this open for now, until we know if it's still applicable or not.