Set monday as first day of week in date field and edit the "Today" button label

We use date fields in our Nintex New Responsive forms. Many enduser don't like that the week of the calendar popup view starts on Sunday. It would be nice when it is possible to set Monday (or other days) as first day of the week.
It would be also great when there would be an option to edit the "Today" button label? In our case we would like to use this word in another language.