Summary
- Refactored the filename and aggregation stuff to more appropriate packages
- Refactored the filename policy and aggregation tree stuff from aggregator to link rewriter
- Removed obsolete filename policy
- Added a test
- removed obsolete filename code from Aggregation[Entry]
- Refactored towards external file name policy
- Unfinished filename policy implementation
- Code cleanup
- Improved filename transliterator (& added test)