70_PHTV.pm: fix ambiHue for changed HUEDevice readings & correct bri+sat calculation if there is no user defined value
70_PHTV.pm: fix ambiHue for changed HUEDevice readings & correct bri+sat calculation if there is no user defined valueView Changes
Source: 70_PHTV.pm: fix ambiHue for changed HUEDevice readings & correct bri+sat calculation if there is no user defined value (http://sourceforge.net/p/fhem/code/7087/)