Create a point geometry when units have identical geometries

[rpulkka]

This returns 400 from API, so these kind of geometries need to be prevented:

{
"type": "Polygon",
"coordinates": [
[
[
24.667776748538017,
60.14373972367766
],
[
24.667776748538017,
60.14373972367766
],
[
24.667776748538017,
60.14373972367766
],
[
24.667776748538017,
60.14373972367766
],
[
24.667776748538017,
60.14373972367766
]
]
]
}