Pending submissions total on lab overview page incorrect.

[Alexander Sjösten]

The pending submissions total on the lab overview page shows an incorrect (0) amount of pending reviews (even though there are in this case 17).

All other areas where one can see the pending submissions is accurate.

[Evgeny Kotelnikov]

Compare User objects uniformly (also fixes #116)

→ <<cset 67e92c1e3483>>