many FritzBox specific readings: 
             wlan_state, wlan_guest_state, internet_ip, internet_state, 
             night_time_ctrl, num_new_messages, fw_version_info

git-svn-id: svn://svn.code.sf.net/p/fhem/code@5618 2b470e98-0d58-463d-a4d8-8e2adae1ed80
SYSMON

git-svn-id: svn://svn.code.sf.net/p/fhem/code@5619 2b470e98-0d58-463d-a4d8-8e2adae1ed80