Reworked the setting window

-Settings no longer apply if they didn't change, hence pressing Ok to close the window no longer freeze the sensor for a moment.
-Added EnableTrackingInNearRange = true in the initialization of the Kinect to ensure users are tracked even in near mode.
-Added a dead zone of 1° to the Kinect elevation angle since the value can change to +1° or -1° from small movement on the support since angle is calculated from the accelerometer.