huge commit

- worked on about everything
- grid walker using plugable modules
- wifi models
- new distributions
- worked on geometric data-structures
- added typesafe timestamps
- worked on grid-building
- added sensor-classes
- added sensor analysis (step-detection, turn-detection)
- offline data reader
- many test-cases

tests/sensors/offline/TestOffline.cpp

@@ -0,0 +1,28 @@
+#ifdef WITH_TESTS
+
+#include "../../Tests.h"
+
+#include "../../../sensors/offline/OfflineAndroid.h"
+
+TEST(Offline, test1) {
+	OfflineAndroid off(getDataFile("offlineAndroid.dat"));
+	ASSERT_EQ(6, off.getGroundTruth().size());
+	ASSERT_EQ(1, off.getWiFi().size());
+}
+
+// cleanup pattern
+// ^[0-9]*;(-1|0|1|2|3|4|5|6|7|9|10|11);.*
+TEST(Offline, test2) {
+	OfflineAndroid off(getDataFile("path4wifi.dat"));
+	ASSERT_EQ(20, off.getGroundTruth().size());
+}
+
+
+TEST(Offline, testPath) {
+	OfflineAndroid off(getDataFile("train/walks/path4_nexus_backward.dat"));
+	ASSERT_EQ(21, off.getGroundTruth().size());
+	ASSERT_EQ(off.getWalkedPath().pos_cm[0], off.getWalkedPath().pos_cm[1]);	// same waypoint twice. not moving within first few seconds
+	off.getWalkedPathInterpolatorCM();
+}
+
+#endif