osTicket/osTicket-1.8 — pull request #1549 by greezybacon (2014-12-15 18:27:24+00:00)
Title: Ensure case-insensitive file extension comparison

Ensure that when generating the list of acceptable file extensions, that the list is lower cased, because the extension from the filename will be lower-cased before attempting to find the extension in the list of acceptable extensions.