Maxcube Fix - wrong values for ACTUAL & MODE items

Similar to issue #1728, items of BindingType.ACTUAL and BindingType.MODE have been updated with false values by getTemperatureSetpoint() with every change of TemperatureSetpoint. 
With this addition only the real valve item without a binding type will be updated if there is a change of the TemperatureSetpoint.
Merge pull request #1836 from polarvogel/patch-2

Maxcube Fix - wrong values for ACTUAL & MODE items