Map control use different border color based on map type

Don't use channel 0 to avoid sequence number problems

APM PreArm message handling

adding follow me

Travis: Use Qt5.5 download for OSX

Add Solo video support

[WIP] Link thread safety enforcement

Make disconnect for prominent

This mechanism automatically queues data into the correct thread where necessary, otherwise the method is invoked directly with low overhead.

At the same time remove the UDP socket event workaround. It is not a problem.

Solo fixes

Also filter solo version string

Auto-Hide guided mode bar

Handle waiting for default component to come through in a better way

Also can handle additional components coming through after default
component is complete

Add SILabs serial ids for radio

Clean unused variables / Fix QObject macro

Add new QuadPlane flight modes

PX4 Tuning: Fix many bugs

Plus other small fixes

Confirm slider: Remove cancel button support

Change calls to isnan / isinf to qIsNan / qIsInf

Update flight mode naming

this simple patch cleans more than 500 warnings on my build
and it should be really safe to apply since it basically remove
unused variables.
Signed-off-by: Tomaz Canabrava <tomaz.canabrava@intel.com>