activity_edit_item.xml, activity_view_item.xml, strings.xml, EditItemActivity.java, ViewItemActivity.java to let user manually change an item to dirty or not. ItemDatabaseHelper.java, ItemData.java, Schema.java to add more instance variables to ItemData class including dirty, wornTime, maxWornTime, wornHistory. Note that List<Data> wornHistory is not saved to database because have not looked into how to do this for List yet.