Database revolution

- added in fitbitData an interface for keeping track of date
- removed annoying IOException, now will write a LOG
- same thing in sensor
- fixed main and adapted to new Database system
- Database now has Local or Remote (to implement)

src/main/java/support/database/RemoteDB.java

@@ -0,0 +1,39 @@
+package support.database;
+
+import device.fitbitdata.HeartRate;
+
+import java.util.List;
+
+// TODO implement
+public class RemoteDB implements Database {
+
+    public RemoteDB(String url) {
+
+    }
+
+    @Override
+    public boolean isReachable() {
+        return false;
+    }
+
+    @Override
+    public boolean updateHeart(long dateMilliSec, double heartRate) {
+        return false;
+    }
+
+    @Override
+    public boolean updateSleep(long dateStartSleep, long duration) {
+        return false;
+    }
+
+    @Override
+    public boolean updateSteps(long dateMilliSec, long steps) {
+        return false;
+    }
+
+    @Override
+    public List<HeartRate> getHeartDataOfLast(int days) {
+        return null;
+    }
+
+}