Add Python hook and update site

The update adds a Python3 hook and reworks the site content and visuals
to try to better appeal to the professional community. These changes
include:
 - Write Python3 hook based on Ruby hook
 - Make Python3 hook the default hook
 - Replace text content of /index.php to appeal to a more professional
   community
 - Add temporary logo to /index.php (/images/logo.png)
 - Rework styling for entire site
There are still several steps that should be taken for refactoring:
 - Polish style further
 - Replace text content of /getauthorization.php
 - Support multiple platforms, ie Windows