Simplify Factors reporting

The current approach of listing multiple Factors in one column makes it difficult to sort and filter file-level data in the primary DeltaCode reporting tool - i.e. a spreadsheet. It would be better to reset to three separate fields for:
1. File "status" Added, Modified, Moved, Removed or Unmodified (current definitions)
2. Copyright - File contains one or more copyright notices OR none
3. License - File contains one or more license notices/text OR none

With these three as separate fields, a user can more easily choose the relevant combinations of file information. This does not deal with the actual detection of a changed copyright or license notice. Rather the idea is to show whether each file has copyright or license information. This assumes that we deprecate License Category reporting for now see #106