astakos: Fix stats for new projects
The recent changes in the Astakos projects implementation changed the contents of the 'quotaholder_app_holding' table. This table now contains holdings for both users and projects. Also, the 'holder' column contains user or project UUIDs, prefixed by 'user:' or 'project:' respectively. This commit updates the stats mechanism in order to reflect the aforementioned changes.
Showing with 19 additions and 10 deletions