update some checks

git-svn-id: svn://svn.code.sf.net/p/fhem/code/trunk@6229 2b470e98-0d58-463d-a4d8-8e2adae1ed80
minor bugs

git-svn-id: svn://svn.code.sf.net/p/fhem/code/trunk@6230 2b470e98-0d58-463d-a4d8-8e2adae1ed80
clear all option

git-svn-id: svn://svn.code.sf.net/p/fhem/code/trunk@6231 2b470e98-0d58-463d-a4d8-8e2adae1ed80
bugfix

git-svn-id: svn://svn.code.sf.net/p/fhem/code/trunk@6232 2b470e98-0d58-463d-a4d8-8e2adae1ed80