Overlay previews (#270)
Overlay previews (#270)

* New maps: OpenPtMap, OpenRailWayMap, SafeCast added

* OpenFireMap added

* Fix test errors (colon position)

* Fix zoomlevel in OpenPtMap layer

* Allow double quotes in JSON (standard)

* Soooory, revert in lint definition

I just was in the wrong branch :-(

* Preview as overlay (OIM, OPM, ORM, OFM, SC)

OpenInfraMap, OpenPtMap, OpenRailwayMap, OpenFireMap, SafeCast

kyroskoh/leaflet-providers,kyroskoh/leaflet-providers,leaflet-extras/leaflet-providers,leaflet-extras/leaflet-providers