ModeShape Tools JCR CND Editor Deletes Comments

All comments are thrown out by the CndImporter when a *.cnd file is parsed. The CndImporter class was copied over from the ModeShape project and ModeShape does not need or use comments. Also, the CND Editor currently does not support editing or creating comments.

At a minimum, the original comments should be saved and written back out when the CND editor is saved. Ultimately, the CND Editor should support comments. Each comment should be related to the CND itself or to another CND element like a node type definition, property definition, of child node definition. When the related CND element is deleted, the comment should also be deleted.