T-Shirt Designs and Printing

I am opening a new issue for this, since it is not exactly what I asked @markknol to do in #26.

If we are to have T-shirts, we need to sort out the following:
- [ ] Design and color options
- [ ] Printing service
- [ ] Shipping

We need to decide, whether we want people to order the shirts through the Haxe Foundation/Site, or whether they should order them directly at the printers. If we have people order through the foundation, we need to put some thought into the workflow and/or find a printer that sort of "integrates" with us.

If we have people order them at the printers themselves, we could provide the designs and just let people choose where to order or we could set up something custom with a printing service. Either way, the fact that we are all over the world could be a problem. We should at least look for one solution in Europe and one in the US.

The same goes for the other printed goods.

Does anybody feel like designing t-shirts today?
- [ ] T-Shirts
- [ ] Coffee Mugs (?)
- [ ] Buttons