fixed paging toolbar

git-svn-id: http://www.pimcore.org/svn/pimcore/private/core/trunk@2502 1f8fe7d8-47f0-464c-8d0a-336f4953ab05
pretty url: added check for dublicate pretty-urls and pathes

git-svn-id: http://www.pimcore.org/svn/pimcore/private/core/trunk@2503 1f8fe7d8-47f0-464c-8d0a-336f4953ab05