[KML/COLLADA exporter] fixed invalid import
Merge branch 'master' of https://github.com/3dcitydb/importer-exporter-postgis

Conflicts:
	src/de/tub/citydb/modules/kml/database/CityFurniture.java
	src/de/tub/citydb/modules/kml/database/GenericCityObject.java
	src/de/tub/citydb/modules/kml/database/SolitaryVegetationObject.java