process events only if visible in browser


git-svn-id: svn://svn.code.sf.net/p/fhem/code@4485 2b470e98-0d58-463d-a4d8-8e2adae1ed80
remove sequence check for peerlist retrieve

git-svn-id: svn://svn.code.sf.net/p/fhem/code@4486 2b470e98-0d58-463d-a4d8-8e2adae1ed80
correct powermeter register

git-svn-id: svn://svn.code.sf.net/p/fhem/code@4487 2b470e98-0d58-463d-a4d8-8e2adae1ed80