Commerce File

Two issues in the queue prevent this module from being used effectively (or at all, in fact) with commerce_file.
Firstly, when the file address is passed as a token the protocol isn't present, breaking the link: https://drupal.org/node/2222775
Secondly, there's no point selling files and making them publicly available at the same time, so the changes made here are pretty much vital:
https://drupal.org/node/1526848
I know this doesn't really count as an issue in itself, other than to request the feature of compatibility with commerce_file.
This patch combines the work done on those issues by others, and makes the module usable with commerce_file.