oops: Swapped last-message and original message

Turns out the canned response selections for the original message and the
last message were swapped.
oops: Handle images in quoted thread entries
Merge pull request #1198 from greezybacon/issue/canned-message-quote-swap

oops: Swapped last-message and original message

Reviewed-By: Peter Rotich <peter@osticket.com>