Add delay to state update.

Controller does not update and send state information immediately.
As a result, delay state refresh by 0.5 seconds.
Add tabs to main window.

Create a tab bar in the main window. Set all data collection and
control widget into tab page.
Add plot tab.

Add a second tab that displays the following plots for a dataset:
 - rearwheel
 - accelerometer
 - gyroscope
 - temperature
 - time
Fix axes autoscaling.