Updates on categories in req traceability matrix

modeling/AVATAR/CoffeeMachine_Avatar.xml

src/main/java/ui/avatarrd/AvatarRDPanel.java

src/main/java/ui/avatarrd/AvatarRDRequirement.java

src/main/java/ui/window/JDialogBase.java

src/main/java/ui/window/JDialogRequirementTable.java

src/main/java/ui/window/RequirementsTableModel.java