TransportationObject model rework

See merge request !27

Changes the construction of the TreeLists and the renderer handling to
reflect the new model of TransportationObjects.

Add ZIP-archive support

See merge request !26

# Conflicts:
#	CityDoctorParent/CityDoctorModel/src/main/java/de/hft/stuttgart/citydoctor2/datastructure/LibraryObject.java
#	CityDoctorParent/CityDoctorModel/src/main/java/de/hft/stuttgart/citydoctor2/mapper/citygml3/Citygml3FeatureMapper.java
#	CityDoctorParent/CityDoctorValidation/src/main/java/de/hft/stuttgart/citydoctor2/check/Checker.java
#	CityDoctorParent/Extensions/CityDoctorGUI/pom.xml
#	CityDoctorParent/Extensions/CityDoctorGUI/src/main/resources/de/hft/stuttgart/citydoctor2/gui/MainToolBar.fxml
#	CityDoctorParent/Extensions/CityDoctorHealer/pom.xml
#	CityDoctorParent/pom.xml

cleanup code

See merge request !24

Changed the export functionality of ZipEntryManager to exporting the
validation reports of validation entries, instead of exporting carbon
copies of the input Zip files' CityGML files.

Vektorklasse zur Übungszwecken in Java hinzugefügt

See merge request !22

# Conflicts:
#	CityDoctorParent/CityDoctorModel/pom.xml
#	CityDoctorParent/pom.xml

Solid self intersection with better triangulation to eliminate false positives

See merge request !23

Disables writing to the QualityADE when parsing the newly added feature
types as a temporary fix. The QualityADE is only compatible with CityGML
Version 2.0, since the XML namespaces changed in Version 3.0.
Updating the ADE to be compatible with 2.0 and 3.0 is a bigger task,
a discussion if it should be updated vs. deprecation and removal is
required.