WL-3179 :  Various fixes/changes to feedback tool including:

1/ Contact the helpdesk link doesnt work if you're not logged in.
2/ Stack trace on front page is you are logged in
3/ Do not restrict number of characters in title (of lower priority)
4/ Do not restrict number of characters in description (of lower priority)
5/ Make "Your email address" box same width as title textbox (of lower priority)
6/ Email not sent if you're not logged in (can you also check that attachment is
 sent)
7)  Fix typo in properties