Improve the file list: get a more detailed status about the file:
- include the full path of the file (not only relative)
- include the md5 hash of the latest version (if it's a file)
- include a list of sharers

Signed-off-by: Nico Rutishauser <nr@hotmail.ch>
Fix tests for file list

Signed-off-by: Nico Rutishauser <nr@hotmail.ch>