Log Message:
Update to release 0.9.12.1. Changes:
- Implement an Auto-Refresh system (fix #231).  (including code from
  Paul Robert Marino <prmarino1@gmail.com>).
- Ability to filter on missing/offline/online/unknown agents. Make more easier
  to read each agent status in collapsed mode.
- Fix filter load/save/delete issue with translation.
- New 'My account' tabs, under the Settings section (fix #241).
- New messageid and analyzerid parameters, allowing link to a Prewikka alert
  from an external tool (previously required a database query in order to
  retrieve the database event id).
- Don't redirect to user listing once an user preference are recorded. Fix
  changing of another user language by an user with PERM_USER_MANAGEMENT.
  Display target user language rather than current user language.
- Improve the timeline control table layout.
- Fix translation of string possibly using plural.