Add translators metrics in Damned Lies
Submitted by Rodrigo Flores
Link to original bug (#598000)
Description
As discussed in GNOME-i18n Mailing List, an idea to improve Damned Lies is to have some translators metrics. Some examples are: how many packages a translator have translated, when a translator contributed for the last time.
This can be useful when we, coordinators, will decide the translator promotion to reviewer.