changed visualisation

added new eval code for new walkers
improved barometer (moving avg and median)
floorplan-staircase-fixes
disabled step-turn (now part of transition)
added abs-orientation-reader (for testing)
added beacons

code/frank/WiFiAP.h

@@ -15,15 +15,16 @@ class WiFiAP {
 public:
 
 	/** the AP's MAC-Address */
-	MACAddress mac;
+	const MACAddress mac;
 
 	/** the AP's readable SSID */
-	std::string ssid;
+	const std::string ssid;
 
-	double tx;
+	/** AP tx-power */
+	const float tx;
 
 	/** path loss for this ap. for testing */
-	double pl;
+	const float pl;