User:Zache/maptest externaldata

 { "type": "ExternalData", "service": "page", "title": "Leicester_Castle_precinct.map" }  { "type": "ExternalData", "service": "page", "title": "Leicester_Castle_precinct.map" }
 * datasource: commons:Data:Leicester Castle precinct.map

Same with width, height, zoom, lat and lon as template params

 * datasource: commons:Data:Leicester Castle precinct.map