Rethink website

As posted on the pypy-dev mailing list, here is a proposal for improving the website front page, and here is the image without annotation. Copying the comments from the annotated site:

• Putting "A fast, compliant, alternative implenetation of Python" in the header you are immediately made aware of what PyPy is, and what it offers.
• Putting "%420 faster on average" in the header shows the power of PyPy
• Highlighting the quote from Guido at the top of the content gives credit to the project and might help aleviate some of the worries the future use might have.
• Adding 4 points, with 4 words. What you get clean and simple. We can link from those to more explicit details.
• Put the the blog posts right at the website, and not have visitors jump back and forth to a blog website (xref issue #3)
• Make the "Download", "Learn More", "Donate" and "Contribute" link buttons.