Changed a minor bug regarding the definition of user_tab_comments, bumpedto 4.6.3 and added an upgrade script (we may not release a 4.6.3 but if wedo, we're ready!)
when deleting Bug Tracker packages I got a referential int constraint violation since in bt_project.delete an attempt was made to delete a CR content folder before the referenceing row in bt_projects. Changing order of deletion. Providing upgrade script. New version is 1.2d6