Tweak templating to avoid errors when the add-on is upgrading, or has it's code disabled but template changes still occurring.
Rework HTML/CSS layout of thread reply banner
Fix UI.X compatibility issue
Display edit history in thread for the banner if users can manage the reply banner
Fix edit history for banner would incorrectly increment edit counter & set edit user
Reduce redundant SQL queries when viewing a thread
Use 'block' type not 'scrolling' for notice above the editor, to ensure css matches Block-based notices at the top of the page.
Improve template modification for adding banner above quick-reply
Fixes compatibility issue with Threadmarks Pro
Remove requirement that a banner has to have text, allowing the banner text to be deleted to deactivate the banner.
Add a unique css class to wrap the banner; "thread-reply-banner"