Request: add option to choose date and calendar format

[nach0]

Currently when selecting English as app language, the date format is automatically set to MM/DD/YYYY, and in the calendar view Sunday is the first day of the week.

Many people choose English as interface language but don't live in the US nor use the US date format. It would be nice to give the users the option to choose the date format and the first day of the week in the calendar view.