Updated QUpgrade
Make Qt Quick Widgets Mac specific. Apparently its so new the Qt folks have not figured out cross platform config entirely yet
Documenting why unit tests are in release build.
Corrected copy/paste error resulting in unused variable warning.
Merge pull request #765 from Susurrus/qt5_win_fixes

Documenting why unit tests are in release build.
Signals cannot be overridden in subclasses.
Merge branch 'master' of https://github.com/mavlink/qgroundcontrol
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.
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