DbLog: fixedrange=hour works now correctly


git-svn-id: svn://svn.code.sf.net/p/fhem/code@5348 2b470e98-0d58-463d-a4d8-8e2adae1ed80
71_LISTENLIVE.pm - bugfix

git-svn-id: svn://svn.code.sf.net/p/fhem/code@5349 2b470e98-0d58-463d-a4d8-8e2adae1ed80
DevIo.pm/TcpServerUtils.pm: TCP KEEPALIVE added, as requested in forum#21022


git-svn-id: svn://svn.code.sf.net/p/fhem/code@5350 2b470e98-0d58-463d-a4d8-8e2adae1ed80