Available builds are now dynamically created

The list of available builds, ie listed on the download page is now
computed dynamically via php.

The section on the homapage to get the latest is also dynamic.
KitchenSink - Initial release
Merge pull request #8 from mlaval/kitchensink

KitchenSink - Initial release
Fixing an issue on builds listing sort

The sort was basically not good on the download page. Thus the
homepage inclusion for latest version was also wrong.
Changing php filectime function to filemtime

We want to display the last modified time from each release build instead of date creation.
Removing old files for samples that is not used anymore
Refactor of the samples page
Merge pull request #9 from fbasso/samples

Refactor of the samples page