Add checks to avoid NPE if not configuration defined for a device.
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
Tidy code
Update Fibaro devices with value 255 used in a list.
ZWave defines configuration values as signed numbers, however Fibaro lists some numbers as signed. This can be resolved for values that are typed in, however for values in lists, this needs to be treated as signed, otherwise the system will ignore these values.
Merge pull request #1482 from mod42/master

Fritzbox Binding log message #881
Merge pull request #1543 from cdjackson/zwave-config_npe

Zwave config NPE checks
Merge pull request #1555 from cdjackson/zwave-fibaro_unsigned_values

Update Fibaro devices with value 255 used in a list.