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

Documentation/AcceptanceTests/AcceptanceTest.docx

Documentation/AcceptanceTests/AcceptanceTest.pdf

...ct/src/main/java/exceptions/CategoryInvalidException.java

...roject/src/main/java/exceptions/DateInvalidException.java

...src/main/java/exceptions/DescriptionInvalidException.java

...oject/src/main/java/exceptions/ImageInvalidException.java

...ct/src/main/java/exceptions/ItemNonExistentException.java

...oject/src/main/java/exceptions/LoginInvalidException.java

...roject/src/main/java/exceptions/MailInvalidException.java

...rc/main/java/exceptions/NoAuctionsAvailableException.java

...t/src/main/java/exceptions/NoItemsAvailableException.java

...ct/src/main/java/exceptions/PasswordInvalidException.java

...oject/src/main/java/exceptions/PriceInvalidException.java

...Project/src/main/java/exceptions/SSSInvalidException.java

...oject/src/main/java/exceptions/TitleInvalidException.java

...ct/src/main/java/exceptions/UsernameInvalidException.java

EclipseProject/src/main/java/project/Category.java

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

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

EclipseProject/src/main/java/project/Seller.java