Clean code before crossed test

...ureLogicielleClient/crossTests/CrossAddItemFilmTest.class

...duction/infrastructureLogicielleClient/opinion/Film.class

...duction/infrastructureLogicielleClient/opinion/Item.class

...ction/infrastructureLogicielleClient/opinion/Review.class

...nfrastructureLogicielleClient/tests/AddItemFilmTest.class

...structureLogicielleClient/tests/ConsultItemBookTest.class

...structureLogicielleClient/tests/ConsultItemFilmTest.class

.../infrastructureLogicielleClient/tests/RenderingTest.class

...astructureLogicielleClient/tests/ReviewItemBookTest.class

...astructureLogicielleClient/tests/ReviewItemFilmTest.class

...oduction/infrastructureLogicielleClient/tests/Tools.class

src/opinion/Film.java

src/opinion/Item.java

src/opinion/SocialNetwork.java