Merge pull request #94 in ZP/z-push from bugfix/ZP-773-autodiscover-needs-timezone-set-for to develop

* commit '19b811fa':
  ZP-773 Removed Berlios reference from contribution, and removed check for function date_default_timezone_set(). Released under the Affero GNU General Public License (AGPL) version 3.
  ZP-773 Autodiscover needs timezone set. Released under the Affero GNU General Public License (AGPL) version 3.

(cherry picked from commit 29f793ef)