chartingfrontend: some bugfixes, introducing multicharts / statusview

git-svn-id: svn://svn.code.sf.net/p/fhem/code@4630 2b470e98-0d58-463d-a4d8-8e2adae1ed80
chartingfrontend: filesize fix

git-svn-id: svn://svn.code.sf.net/p/fhem/code@4631 2b470e98-0d58-463d-a4d8-8e2adae1ed80
chartingfrontend: fixing fill behaviour

git-svn-id: svn://svn.code.sf.net/p/fhem/code@4632 2b470e98-0d58-463d-a4d8-8e2adae1ed80