data model ready for implementation
Merge branch 'master' of github.com:h3nr1-g/emi-scan

Conflicts:
	documentation/data model/er_model.graphml
	documentation/data model/er_model.pdf
	documentation/data model/er_model.png
	documentation/data model/relation_model.mwb
	documentation/data model/relation_model.pdf
	documentation/data model/relation_model.png