BibHarvest: cleaner OAI harvester vs repository
- Renamed files to have a clean OAI harvester and OAI repository component naming. Updated tables.
- OAI harvester can now be run in a single-shot manual mode or in an automatic mode via a unique CLI API.
- OAI repository updater's set management now generates `global' set automatically from partial sets.
- OAI repository is now better compatible with OAI PMH (identify).
- Improved I18N language propagation in the user interface.
- Code cleaning.