[Feature Request] allow entry of time and date via keyboard.

[dreirund]

Is your feature request related to a problem? Please describe.

When doing a route search, the time and date can only be entered by clicking with the mouse/ on a touch screen.

For keyboard affine hackers and on devices with a touchpad this is quite a pain.

Describe the solution you'd like

Make the date and time fields keyboard-editable.

Additional context

Screenshot of the interface as it is now: