Merge pull request #1 from openhab/master

Update from original
Fix for #881

Telnet connection is now only opened if a password is set and if there
is an item configured which uses the telnet connect on the standard
port.
removed password log message
Merge pull request #1482 from mod42/master

Fritzbox Binding log message #881
Merge branch 'master' into DSCAlarm