(S7v5-18) Some bug fixes for BBCode rendering, as well as for private message migration from v4-v5.  Similar fixes for migration of bios and content descriptions.
(S7v5-18) Some bug fixes on the Admin Dashboard.  Also, cleaned up JKit a bit by putting the ligthbox code into its own T::T template snippet for uniform usage and maintenance.
(S7v5-18) Added the posting of comments on content, the associated views, modified the migration script to handle updates to comments, added e-mail templates for comment notifications, and some general JS cleanup.
(S7v5-18) Finished up UI tweaks to the comment system.  Fixed some bugs surrounding validation and error-checking.