projects need to grant svn access

[Horst Meyerdierks]

The developers on a project can use the web admin plugin to change which existing users can access the trac environment (including browsing the repository), but proper access to the svn repository via HTTPS/WebDAV is firmly under control of the superuser on the server. Could the per-project group definitions in dav_svn.authz be collected automatically from projects rather than the whole file be edited centrally only by root@forge?