added helper methods for debug printing

fixed issue when reading wifi entries within old walk files
worked on earth-registration
added corresponding test-cases
other minor changes

floorplan/v2/FloorplanHelper.h

@@ -29,6 +29,17 @@ public:
 		return std::make_pair(nullptr, nullptr);
 	}
 
+	/** get all APs within the map */
+	static std::vector<std::pair<Floorplan::AccessPoint*, Floorplan::Floor*>> getAPs(const Floorplan::IndoorMap* map) {
+		std::vector<std::pair<Floorplan::AccessPoint*, Floorplan::Floor*>> res;
+		for (Floorplan::Floor* f : map->floors) {
+			for (Floorplan::AccessPoint* ap : f->accesspoints) {
+				res.push_back(std::make_pair(ap,f));
+			}
+		}
+		return res;
+	}
+
 public:
 
 	/** align all floorplan values to the given grid size. needed for the grid factory */