Fix compilation on some linux boxes

Remove uneeded code

We just wanna move some code from QThread, from private
to public, se can use using:: for that.
Signed-off-by: Tomaz Canabrava <tomaz.canabrava@intel.com>

This shouldn't break a thing on other linux boxes that compiles
fine.
Signed-off-by: Tomaz Canabrava <tomaz.canabrava@intel.com>

Run uninstaller directly to prevent removing necessary files during reinstall

Remove "Pipable" control if there is no Video.

Tested with Android as well (map elements work fine there too). I can't test with Windows right now, if there is an issue, I can deal with that on another PR.

Demote safe mode links so they don't confuse users of a fresh install

Add support for customizing the abbreviated representation of mission…

Tweaking the SliderSwitch controller.

Add iOS release builds

Add temp text indicators to SliderSwitch

Add new SliderSwitch control, use for Guide mode confirmation

Implement click-to-retask via MISSION_SET_CURRENT in flight view for #2275

travis-ci fix slow doxygen upload and broken android versioning

-fixes #2955

-fixes #3023

Deleting old map tile disk cache if one is found.

Remove zoom support

Pull multiVehicleManager from QGroundControl

Turn off screen sleep if Vehicle connected