KS300: german doc added, english corrected


git-svn-id: svn://svn.code.sf.net/p/fhem/code@5545 2b470e98-0d58-463d-a4d8-8e2adae1ed80
fhemweb.js: call the callback even if the script is already loaded


git-svn-id: svn://svn.code.sf.net/p/fhem/code@5546 2b470e98-0d58-463d-a4d8-8e2adae1ed80