Show date *and* date+time option in gnDatePicker

[GeoSander]

Problem

Currently, GeoNetwork always shows a time field next to the date in the gnDatePicker unless hideTime==true. See also hideTimeInCalendar in view configuration (e.g. #3058), but that would completely hide the time component everywhere in the editor view, which may not always be desired.

The way GeoNetwork displays the date/time option is like this:

Note that the option says "Date or date time".
This is confusing to users, as they could be under the impression that they have to fill in the time if that field is visible.

Proposal

Users have mentioned that they would like to split the Date or date time option into 2 separate options:

• Date (default option)
• Date and time (available only if hideTimeInCalendar==false)