Bug Fixes and Feature Upgrade

1.) Corrected bugs in the admin pages that were throwing PHP errors in
certain situations.
2.) Corrected a bug in the BBCode parser that prevented
[color=XXX]{text}[/color] from working.
3.) Upgraded the functionality of the Spell Checker addon to improve
performance.
4.) Corrected a bug that prevented stand-alone apps from generating a
custom conversation ID.
5.) Further refinements to the JSON interface example GUI to improve
page load performance and functionality.