Merged requested to merge refactor-csv-database into master
This new format of CSV databases fixes the following issues with the old format:
- There is a clear distinction between subject_id (which is the identity of the person behind a Sample) and template_id (which is the unique identifier of a biometric template, for both enroll and probe SampleSets)
- Implements sparse scoring through a separate
for_matching.csvfile. In the old format, this was possible through hacks only.
- Removes the SampleLoaders
- The implementation is based on the one in bob.pipelines