Revise CiviCRM download list page
Combine http://civicrm.org/download and http://civicrm.org/download/list into one page (ideally with url http://civicrm.org/download). Sample mockup at: https://drive.google.com/file/d/0B3nRQcFMxWpwck41MF80TXMzNGc/view?usp=sharing