some fixes [multithreading,..]

needed interface changes [new options]
logger for android
wifi-ap-optimization
new test-cases

sensors/radio/model/WiFiModelLogDist.h

@@ -36,6 +36,13 @@ public:
 		;
 	}
 
+	/** get a list of all APs known to the model */
+	std::vector<AccessPoint> getAllAPs() const {
+		std::vector<AccessPoint> aps;
+		for (const auto it : accessPoints) {aps.push_back(AccessPoint(it.first));}
+		return aps;
+	}
+
 	/** make the given AP (and its parameters) known to the model */
 	void addAP(const MACAddress& accessPoint, const APEntry& params) {