Add all contact information to user lookup popup

Previously only the name, email, and phone number would be displayed on the
pop up dialog
forms: Fixup possible XSS exploit

Displaying field values on various pages and dialogs could result in cross
site scripting exploits.

Fixes osTicket/osTicket-1.8#296
Merge pull request #297 from greezybacon/issue/296

forms: Fixup possible XSS exploit

Reviewed-By: Peter Rotich <peter@osticket.com>