Revert "Go back to GeoModelAdmin - the OSMModelAdmin doesn't appear to be reliable"
Revert "Go back to GeoModelAdmin - the OSMModelAdmin doesn't appear to be reliable"

This reverts commit 44018690c27e05d7dfda0480dfb6cfc3f2f30577.

mollyproject/mollyproject,mollyproject/mollyproject,mollyproject/mollyproject