Develop a piece download counter or other means to sort by piece download popularity

[dominicus]

Moved from MutopiaProject/MutopiaProject#10 (12/12/2012) "Suggestion by Paul Morris" @PaulMorris

@dominicus: Found this setup to count file download requests on the Apache server side. http://www.webdesignoutsource.net/download-counter-with-apache-and-php/