Update to new property field specification
Merge branch 'master' of https://github.com/AdeleResearchGroup/ApAM

Conflicts:
	runtime/apform/apform-ipojo/src/main/java/fr/imag/adele/apam/apform/impl/handlers/PropertyInjectionHandler.java
Better handle property injection for sets (unmodifiable for
non-internal properties and automatic propagation for internal)