Clickable deadzone

Minor improvement to detection of stick recentering after calibration. Without this if you performed a calibration with deadband enabled but one of the deadbands at the end of the calibration was ~0 it would be very difficult to position the stick so that Qgroundcontrol considered the axis to be centered.

recentered after calibration.

Made it so that raw axis monitor indicators are narrow so that they don't obscure view of the deadzones.

New TransectStyleComplexItem base class

Allow loc of radios string

Support HIGH_LATENCY2.failure_flags

Robustify mission upload/download

More work in high latency

Update PX4 Firmware metadata Thu Feb  1 04:37:26 UTC 2018

* Command ack timeout back on normal/high latency link
* Correctly update ack timeout and high latency bit at correct times

Stable merge

Bad resume mission slider

Fix missing TTS stuff

Fixes for TTS on Linux

Stable merge

When downloading mission items from the autopilot we need to retry more
agressively, so use a shorter timeout. If we don't do this, we might not
re-request a mission item in time and the autopilot has already given up
the overall mission transfer.

This fixes the case where a mission request from QGC to autopilot or a
mission item from autopilot to QGC gets lost on the link and needs to be
requested again.

Batch terrain requests

Support batching terrain requests