Adapted external changeset
Implemented dummy objects to avoid null pointers and null checks
Reset to java escape
Merge branch 'feature/CerthChanges' of https://github.com/HeinrichHartmann/LiveGovWP1 into feature/CerthChanges

Conflicts:
	mobile/SensorCollectorProject/SensorCollectorLibrary/src/main/java/eu/liveandgov/wp1/sensor_collector/sensors/SensorSerializer.java