Switch to CType

Breaking: PlugIns changed from list_type to CType. You need to execute the Upgrade Wizard to change your PlugIns.
Breaking: due to a TYPO3 bug (issues/105135), the Ajax-Version is not working anymore!
Breaking: layout changed: fieldset added to questions and user data in the form and settings.wrapQuestionTitle1 changed to legend.
Documentation translated to german.