Move contest link to normal navigation
Simplify download links

Provide links to zip files - most people anyway download it and it
simplifies the page.
Move green boxes to top of page

They are now more integrated to the page.
Nicer layout of buttons

Add some extra width
Shorten button texts
Move boxes to news page top
Smaller margin around content
Cleanup not needed html
Make whole buttons clickable
Make buttons color match rest of the page
Kill tabs
Smaller spacing between boxes