Set Column component size correctly

Fix setting the baud rate.

File extensions need consistency. Issue #1182.

Rework setup buttons to fit in lower resolution displays

Qml controls

Add missing qml module

fix style in README

There's also a partial fix for the databits and stopbits. I'm unsure how to deal with the logic
around the 'is_cdc' variable, as I can't really follow what it's for.

Fix the formatting at "Initialize submodules".

Controls respect QGCPalette settings. Also added test window.

Since this is generic Qml support not specific to FactSystem

Only seems to be missing in some cases but can’t hurt if already
installed.

Add Light/Dark theme support to QML

Back to non-modal, no pop-up Setup View

Fixing braces
Changing data plot save files to csv only
Fixing LinechartWidget::startLogging() as it no longer needs to worry about a proper file name being set.

Conflicts:
	src/QGCApplication.cc
	src/QGCFileDialog.cc
	src/QGCFileDialog.h
	src/ui/MainWindow.cc
	src/ui/QGCBaseParamWidget.cc
	src/ui/WaypointList.cc
	src/ui/designer/QGCToolWidget.cc
	src/ui/linechart/LinechartWidget.cc

Merging master
Applied changes to file open/save dialogs.

Removing unused selectedFilter argument from QGXFileDialog methods.

Remove erroneous use of QFileDialog::selectNameFilter()