Updated QUpgrade, fixes #769
More qupgrade fixes
FileManager: whitespace only
Fix device listing on Linux
FileManager: hack to filter out images for video downlink
Merge pull request #770 from mavlink/fix_videotransmission

Fix videotransmission
Fixed debug console location, still ugly (style sheet handling)
Fixed missing preferences menu
Filtering MAVLink in debug console as default makes sense
Better main window init
Fix advanced port options in main serial window
Remove protobuf hacks
Merge pull request #772 from mavlink/protobuf_cleanup

Remove protobuf hacks
mavlink submodule: use latest pixhawk headers
Merge pull request #773 from mavlink/mavlinkheaders

mavlink submodule: use latest pixhawk headers
Don't bulk add all /usr folders for includes or libs.
This causes problems for some systems with Qt5 and Qt4 installed (like Fedora 20).
Removed unused variables from QGCExternalLibs.pri.
Fix the advanced checkbox in the RC Config portion of the vehicle config.
Remove non-existent signal connection from IncrementalPlot.
I don't think it's needed anywhere in QGC since this has been a bug for a long time.
QtConcurrent is a Qt Module and doesn't need to be in the repo directly.