Add search within a radius around a geopoint

[powolnymarcel]

Allow the user to search within a radius around a geopoint.

eg: Let say you want to list all addresses 8KM around Brussels
- Country : Belgium
- City : Brussels {lat: 50.848227,lng:4.352601}
- Radius : 8KM

To list all addresses 8KM around Brussels*:

:boundaries="{lat: 50.848227,lng:4.352601,radius:8000 }"

*if the country is set to Belgium

[danimalweb]

Thanks for this, just what I was looking for.

[LonnyX]

@olefirenko this should be merged