New standalone mission editor unit test

New QGCFileDownload support for bit.ly style redirects and file name

Don't try to load Qt en_Us loc

Fix locale setting

Cut over to new JSON translation system

Cherry pick stable fixes

Added configurable value grid to toolbar

ToolStrip rearchitecture for encapsulation and customization

Add support for Json file string translations

Major update to simplify and document the custom build example

Major rework to support terrain profile display and terrain collision reporting

Separate daily build settings space

Support for reusable InstrumentValueArea control

Signed-off-by: Patrick José Pereira <patrickelectric@gmail.com>

App messages now use simple modal message dialogs. Vehicle messages continue to use non-modal popup.

Fix PX4 Flow image provider

Set RC To Param support

New grid based values page editor support

Every single line of this function is commented out, and the
documentation of GStreamer says that it's uneeded.

Move analyze page list model to the core plugin.

UI tweaks

WIP - MAVLink chart as a control. Add any number of charts with any number of series. All individually controlled.

Disable closing app on last window close. This will close
the app on every widget spawned in QML that closes (MessageBox)

Revert QGuiApplication->QApplication change since it breaks message dialogs.

New Create Plan support

Signed-off-by: Patrick José Pereira <patrickelectric@gmail.com>

Remove duplicates from missing parameter reporting

Better flight trajectory point algorithm

Plugin'ized follow me support

Fix unit test bug

Delete qml engine prior to toolbox