Completed ContainerEditorTest, canDeleteContainer() has been tested.
Updated Serializer and Model and tested them; they work.
Merge branch 'andy' of https://github.com/jacoblwright/hit into evan
added ChangeType enum
ant clean
fixing merge issues
Merge branch 'nick' of https://github.com/jacoblwright/hit into jake

Conflicts:
	src/model/ItemManager.java
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All of my javadocs are up to date
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Finished testing, changed deleteProduct to removeProductFromContainer, updated JavaDocs
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Fixed checkstyle errors
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Merge branch 'andy' of https://github.com/jacoblwright/hit into evan
Implemented Serializable to ProductManager, changed UPCExists to upcExists
Added BarcodePrinter class stub
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Merge branch 'evan' of https://github.com/jacoblwright/hit into andy

Conflicts:
	src/model/ProductManager.java