Finish header

And other fixes
Replace gradients with the mixin
Better birdtab styling

And linkify that one link in the readme. (The readme should probably be
reworked anyways...)
Simplify tab styling

And add footergale (temp png)
Add legacy-ie.css to the html
Updating the boilerplate & fixing IE
Update boilerplate
new boilerplate readme
Fix the nav, so it doesn't overflow to the content box