update hooks for key value config

git-svn-id: http://www.pimcore.org/svn/pimcore/private/core/trunk@2562 1f8fe7d8-47f0-464c-8d0a-336f4953ab05
reverse mapping of document hardlink ids

git-svn-id: http://www.pimcore.org/svn/pimcore/private/core/trunk@2563 1f8fe7d8-47f0-464c-8d0a-336f4953ab05