Frontend fixes Eyal

[eyalacato]

Several fixes for OpenKaarten Frontend map:

1. A coordinate can have more then 2 elements, besides lat and long. So a reverse is not working. We need to set lat and long specifically to 1 and 0
2. Features doesn't have to be an array. If there is only 1 feature in a FeatureCollection, then make it an array
3. When using the live url type, we don't add marker and icon information, so marker can be undefined.
4. If the location geometry is a MultiPoint, then adding it to a cluster doesn't work. So therefore add it to the map directly.