Adding a new airport buggy

[jms72]

Adding a new airport did not work well:
Searching in the form gave always NaN even when selecting "Ourairports" as source which demonstrably does have the airport I was trying to add (https://ourairports.com/airports/EDFR/).
When instead trying to copy all the inputs from ourairports into the form to manually add, the Country drop down only contains "All" as country. I cannot select any real country for the airport to be added.

[reedy]

#1087 for the country