[service] allow repo_stats for users It's used by the siteinfo view, which is available to managers and users. This change prevents a crash in that view.

[views] Escape class attribute value in CWGroup incontext view

[devtools] use a specific test_db_id when disabling anon The anonymous user is created (or not) in postcreate, which for tests means when creating the cached empty database. The anonymous_allowed=False test classes should thus not share their template db with other test classes, otherwise either they end up with an unexpected anonymous user, or the others miss theirs and things fall apart.