bugfix elements: use the parent path from the database (getCurrentFullPath) to save an element , to ensure the path really exists and does not rely on the path  that is currently in the parent object (in memory), because this might have changed but wasn't not saved

git-svn-id: http://www.pimcore.org/svn/pimcore/private/core/trunk@4604 1f8fe7d8-47f0-464c-8d0a-336f4953ab05