Datetimepicker do not follow 'First day of the week' Calendar Customization

[r-xyz]

NEMO has built-in functionality to select first day of week.

This apply correctly to weekly/monthly Calendar views:

Unfortunately, the same setting is not consistently implemented in datetimepicker.

Current datetimepicker do not implement any weekStart option, but if you have any suggestions on how to implement it, I can submit a PR.

[rptmat57]

there is a way, or at least something to start thinking about:

moment.updateLocale('en', {
  week: { dow: 1 } // Monday is the first day of the week
});

now, it has to be done before creating the pickers, so ideally it would be placed in the base.html template, at the top right after loading moment.js.

Or even better, at the top of nemo.js. that might be easier and faster.

Now, I don't believe moment.js automatically sets the locale, so this should work for everyone regardless of their browser/computer's locale.