Translation improvements to existing activities

[Antoni Bella Pérez]

El dilluns, 15 de gener de 2018, a les 14:50:40 CET, Johnny Jazeix va 
escriure:
> 2018-01-15 13:32 GMT+01:00 Antoni Bella Pérez <antonibella5 at yahoo.com>:
> > discovery (calendar)
> > discovery (find_the_day)
> > 
> > - Our week starts on Monday. The list is translated but starts on sunday.
> 
> According to wikipedia (https://en.wikipedia.org/wiki/Week#Week_numbering),
> the first day of the week depends on the country. I'm not sure how
> difficult it would be to have it good for everyone (using
> http://doc.qt.io/qt-5/qcalendarwidget.html#firstDayOfWeek-prop probably).
> If we can't find a global solution, I'm ok to change it with the
> international standard (Monday).

  Your last code work fine. This respects the app's user settings for the 
language, tested with KUbuntu GNU/Linux amd64:
  en: OK
  fr: untranslated (take 'en'), OK
  ca: OK

  Regards
  Toni