Update phpMailer to current stable release 5.2.7
Update HTMLPurifier to current stable version 4.5.0
Update Smarty to current stable version 3.1.14
Update all JQuery related libraries to more recent versions
just replace the german word for 'unlimited' with the corresponding sign like in the english lang-file

Signed-off-by: Michael Kaufmann (d00p) <d00p@froxlor.org>