New features

Changes since 7.x-1.6-rc3:

Module full release with examples.

Add the following component types:
-image with multiple values
-file

Solving issues and improve code

After significant refactoring, we now have #2893580: Add support for quotas done. But it could still use some testing.

Changes since 8.x-2.0-alpha1:

- Rearranged the project/concept scheme tables in the PP Taxonomy Manager configuration
- Added information about the last sync and checks if a sync is required
- Added support for global notifications
- Improved exporting and synchronization of multilingual taxonomies
- Various smaller bug fixes, wording updates and documentation improvements

Added number to column types.