PIMCORE-1835 Support batch update for keyvalue datatype

git-svn-id: http://www.pimcore.org/svn/pimcore/private/core/trunk@2183 1f8fe7d8-47f0-464c-8d0a-336f4953ab05
maintenance script: dynamically add non recognized options to avoid error messages

git-svn-id: http://www.pimcore.org/svn/pimcore/private/core/trunk@2184 1f8fe7d8-47f0-464c-8d0a-336f4953ab05