performance enhancements

memory enhancements
prevent starting sensors more than once
fix for wifi lag issues
map scaling for huge buildings

Settings.h

@@ -42,7 +42,8 @@ namespace Settings {
 
 
 
-	namespace MapView {
+	namespace MapView3D {
+		const int maxColorPoints = 10000;
 		constexpr int fps = 15;
 		const Timestamp msPerFrame = Timestamp::fromMS(1000/fps);
 	}