TinkerforgeBinding: Fix config management regression from voltageCurrent integration
TinkerforgeBinding: for now poll all devices, because binding startup could happen before ui startup
Merge branch 'TFNewDevices' into TFintegration

* TFNewDevices:
  TinkerforgeBinding: for now poll all devices, because binding startup could happen before ui startup
  TinkerforgeBinding: Fix config management regression from voltageCurrent integration