KS300: readings fix


git-svn-id: svn://svn.code.sf.net/p/fhem/code@5078 2b470e98-0d58-463d-a4d8-8e2adae1ed80
fhem.pl: configDB patches from betateilchen


git-svn-id: svn://svn.code.sf.net/p/fhem/code@5079 2b470e98-0d58-463d-a4d8-8e2adae1ed80