Update and translation of commandref-text by Peter

git-svn-id: svn://svn.code.sf.net/p/fhem/code@5022 2b470e98-0d58-463d-a4d8-8e2adae1ed80
commmandref-translation into german by Stefan

git-svn-id: svn://svn.code.sf.net/p/fhem/code@5023 2b470e98-0d58-463d-a4d8-8e2adae1ed80