Add support for specifying the format of report filenames and directories in the archive.

This implements: https://trac.torproject.org/projects/tor/ticket/13232#comment:1
Minor cleanup of bouncer handlers.
Set default report file path to include country code.

Fix calling of report_file_name
Merge pull request #57 from TheTorProject/feature/13232

Add support for specifying the format of report filenames and directorie...