Add TODO entries as the category export/import module code has not been implemented.
Remove a redundant folder and code
Add an exception if the user tries to import or export categories.
Replaced XMLDataDocument with XMLDocument
Replaced XMLDataDocument with XMLDocument
Add TODO tasks and NotImplemented Excpetions for import/export module data.
Replaced XMLDataDocument with XMLDocument
Replaced XMLDataDocument with XMLDocument
Add an exception if the user tries to import or export categories.
Add a missing comment apostrophy.
Minor compiler warnings resolved.