metashare/META-SHARE — pull request #297 by jsteffen (2012-06-12 12:46:24+00:00)
Title: added up-to-date check for digests

Requires settings.MAX_DIGEST_AGE in seconds, a digest is considered outdated if older than this;
a cron job should call storage.models.update_digest in MAX_DIGEST_AGE / 2 intervals.
Please merge.