New features:
- Add tabbed dashboards
- Display installed version of handled extensions
- Display information on pg_track_settings
- Add a "runtime per sec" serie on per-cluster and per-db views.
Bug fixes:
- Fix qualstat_getstatdata, condition was ignored
- Fix #10: Handle case n_distinct is unkown.
- Fix some syntax erors
- On per-cluster view, the avg runtime was displayed, not the total runtime.
Misc: - Show the initially sorted column in grids.
- Make query detail widget smaller
- Better hint on fail wizard.
- Fix #12: Don't display sidebar on login page.