Add-ons [FF] Showcase Enhancements 1.2.12

Changed "Item Quick Reply" from a checkbox to a dropdown.

"Bottom of item page" will appear above where the built in SC comments would be if you had them enabled.
"Directly below item" is as it sounds

Bug Fix - Drafts weren't being cleared properly on submission.

• Removed the hardcoded CSS from the element and put everything in a ff_se_threadthumbnail.less template.
• Also set the default CSS background position to "center" - so everything looks a bit nicer now.

Fixed bug where you couldn't disable cover image generation (size wouldn't accept 0).
Fixed bug where rebuild could throw error on invalid cover attachments.

Changed default cover size to 0 (so disabled on first install)