updated xmlEditor.js so that it works without the ace editor

git-svn-id: http://www.pimcore.org/svn/pimcore/private/core/trunk@2193 1f8fe7d8-47f0-464c-8d0a-336f4953ab05
xmlEditor.js bugfix

git-svn-id: http://www.pimcore.org/svn/pimcore/private/core/trunk@2194 1f8fe7d8-47f0-464c-8d0a-336f4953ab05
document inline edit: added source code editor

git-svn-id: http://www.pimcore.org/svn/pimcore/private/core/trunk@2195 1f8fe7d8-47f0-464c-8d0a-336f4953ab05