Vehicle send COMMAND_INT support

Draggable radius adjustment for Orbit

QGCMapCircle: Support for dragging to change radius

Mavlink Orbit support

Mavlink update

Structure Scan: Fix lastSequenceNumber calc

HIL (X-Plane): Allow to control aircraft flaps in XPlane

More fixes

Do not send virtual joystick commmands over high latency links

Plan: Sync indicator fixes

Offline Maps: Import/Export fixes

* Export should always be enabled since you can export default tile set
* Fix Select All/None problem

qgroundcontrol: Use qtquickcompiler by default

Signed-off-by: Patrick José Pereira <patrickelectric@gmail.com>

Windows OpenSSL: Use libs which static link to CRT

Split constructor of HeartbeatTimer up in two functions

Previously the first activeChanged signal got lost because it was not connected yet to the LinkInterface which resulted in a link incorrectly shown as inactive.

Fix for vehicle widget bug