View should show every element that has ever been record at the current station.
The icon for each element should only be shown once
The icon should be bold if the element is currently being recorded at that station (defined as having no end_date specified`)
The icon should appear disabled (but still be clickable) if the element all records for this stationelement have an end_date specified, meaning that the element is no longer being recorded at that station
The icon colour should be red to indicate inconsistent data - e.g. more than one record exist for that element that have no end_date at the current station (since only the latest record may have no end_date)
Clicking an element should display the StationElements List view filtered for just the current station, allowing existing records to be edited, or + Add New
end_datespecified`)end_datespecified, meaning that the element is no longer being recorded at that stationend_dateat the current station (since only the latest record may have noend_date)