fhemweb_multiple.js rewrite as jQuery-ui-dialog + default .css reorg


git-svn-id: svn://svn.code.sf.net/p/fhem/code@5731 2b470e98-0d58-463d-a4d8-8e2adae1ed80
configDB -  code cleanup

git-svn-id: svn://svn.code.sf.net/p/fhem/code@5732 2b470e98-0d58-463d-a4d8-8e2adae1ed80