Roundcube Webmail 1.0.6

This is a security update to the stable version 1.0. Besides two security improvements, it mainly contains bug fixes we back-ported from the 1.1.x series and which we found important for the long term support branch of Roundcube. See the full changelog in our wiki

It's considered stable and we recommend to update all productive installations of Roundcube 1.0.x with this version. Please do backup before updating!