Final rename

src/Classes/InterfacePetriNet.java

src/Classes/PetriNet.java

src/JUnit/TestActivationPetriNet.java

src/JUnit/TestArcReset.java

src/JUnit/TestPetriNet.java

src/JUnit/TestToString.java

src/org/pneditor/petrinet/adapters/imta/ArcResetAdapter.java