document email: added controller/action/template selector in settings

git-svn-id: http://www.pimcore.org/svn/pimcore/private/core/trunk@2752 1f8fe7d8-47f0-464c-8d0a-336f4953ab05
added / modified some translations

git-svn-id: http://www.pimcore.org/svn/pimcore/private/core/trunk@2753 1f8fe7d8-47f0-464c-8d0a-336f4953ab05