new brightness handling (#430)

* clean color adjustment

* now a prio duration of "0" means infinity

* implement dynamic 'just in time' initialization

* implement new brightness handling

* cahnge access level

* i18n fix

* - cleanup brightness stuff
- update webserver, now with initial ssl support

* - backlightThreshold is now 0-100 instead 0-1
- better performance for brightness - use piecewise linear instead of sqrt

src/hyperion-remote/JsonConnection.cpp

@@ -445,9 +445,10 @@ void JsonConnection::setAdjustment(
 		double *gammaR,
 		double *gammaG,
 		double *gammaB,
-		double *backlightThreshold,
+		int    *backlightThreshold,
 		int    *backlightColored,
-		double *brightness)
+		int    *brightness,
+		int    *brightnessC)
 {
 	qDebug() << "Set color adjustments";
 
@@ -538,6 +539,10 @@ void JsonConnection::setAdjustment(
 	{
 		adjust["brightness"] = *brightness;
 	}
+	if (brightnessC != nullptr)
+	{
+		adjust["brightnessCompensation"] = *brightnessC;
+	}
 	if (gammaR != nullptr)
 	{
 		adjust["gammaRed"] = *gammaR;