Removing all SLUGS autopilot-specific code.
SLUGS has maintained their patches out-of-tree for a long while now.
These will eventually get merged back in, but it'll be easier to evaluate them as fresh commits instead of modifications to this old & dead code, so we'll delete this for now.
Removing old file containing dev notes.
QtConcurrent is a Qt Module and doesn't need to be in the repo directly.
Adjust stylesheets to render menubar items correctly.
There is a *bug in Qt5 (as of 5.3.1) where QMenuBar::items don't inherit their background colors, but revert to default system styling. The work around is to explicitly color their backgrounds.
Add action item to MainWindow.cc
Remove old dead code from MainWindow.cc
Fixed missing argument in debug messages. Now they're readable!
Merge pull request #778 from Susurrus/master

Fix remaining Windows issues on Qt5
mavlink: submodule updated
Update QML files to Qt Quick 2.1, the version as of Qt5.1.
Fixes for connections in APM pilot code.
Merge pull request #779 from mavlink/mavlinkupdate

mavlink: submodule updated
Merge pull request #776 from Susurrus/rem_concurrent

Remove QtConcurrent from repository
Merge pull request #780 from mavlink/qtquick2

Qtquick2
Temp disable of FileManager unit test

This is to get TeamCity up and running again. This unit test fails only
in TeamCity for some currently unknown reason. One TC is back up, I’ll
revisit and turn it back on.
Merge pull request #784 from DonLakeFlyer/FileManagerUTDisable

Temp disable of FileManager unit test
Merge branch 'master' of https://github.com/mavlink/qgroundcontrol into del_slugs
Fix valgrind leak in opmapcontrol.
Fix for uninitialized value error in opmapcontrol.
Found by valgrind.
Fix for partial initialization of a struct.
Found via valgrind.