DatePicker improvements

[danielskovli]

Description

As a user of a form that has a start and end date, I would like the end date to default to the view of the start, so I can more easily pick dates far in the future.

Additional Information

Linking two or more DatePicker components would make the user experience when picking related dates smoother. For instance, if picking a start date a year in the future, you have to click a handful of times to get that far. Then you move on to the end date component, which defaults to today's date and you have to perform the exact same clickathon again.

Not only is this cumbersome, it increases the risk of incorrect data being entered by the user.

Acceptance Criterias

• Defaulting a DatePicker's view to the value of another DatePicker's selected value should be possible. Note that the DatePicker value itself should not be automatically set to anything, just that the selection view should be navigated to the right day/month/year/milliennia