corrected errors in auctionUnit test

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

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

...t/src/test/java/fitNesseFixture/AuctionBeaterFixture.java

...pseProject/src/test/java/fitNesseFixture/ItemFixture.java

...eProject/src/test/java/fitNesseFixture/SellerFixture.java

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

EclipseProject/src/test/java/unitTest/AuctionUnitTest.java

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