Update to match the new navX firmware 2.3.254 from Kauai Labs

• Modified VIs which were previously limiting update rate to 60Hz (now 100Hz)
• Modified the processing loop wait time to (1/update_rate) - 4. Empirical testing on a RoboRIO indicated that this update rate allows all 100 samples/second to be received successfully on a RoboRIO. The previous update rate was not quite sufficient, and would lead to missed updates.