Merge branch 'master' of gitlab.inf.unibz.it:TTST1920/clar

EclipseProject/src/main/java/Main.java

...oject/src/main/java/exceptions/EmailInvalidException.java

EclipseProject/src/main/java/project/Auction.java

EclipseProject/src/main/java/project/Bid.java

EclipseProject/src/main/java/project/Item.java

EclipseProject/src/main/java/project/ItemPicture.java

EclipseProject/src/main/java/project/User.java

...pseProject/src/test/java/fitNesseFixture/UserFixture.java

...roject/src/test/java/unitTest/AuctionManagerUnitTest.java

EclipseProject/src/test/java/unitTest/UserUnitTest.java