Migrate da:packages-by-tags to directory repositories (to move away from eXist).
Add default rules to throw an error when an unknown (especially root element) node is encountered.
Fix the existing test, and add a new test for da:packages-by-tags.
Migrate da:list-categories to directory repositories (to move away from eXist).
Migrate da:packages-by-category to directory repositories (to move away from eXist).
Migrate da:list-authors to directory repositories (to move away from eXist).
Migrate da:packages-by-author to directory repositories (to move away from eXist).
Migrate da:package-file-by-id and da:package-file-by-name to directory repositories (to move away from eXist).
Remove the admin console. Export and import mechanisms are not needed anymore with Git support, and the consistency check tool was not implemented yet and will be better implemented as a server-side script (and partly part of the Git repository update batch process).
Removed everything that was left and still related to accessing eXist and/or uploading a new package (new packages are added through Git now).
Remove an upload-related leftover...