Delete qml engine prior to toolbox

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

Remove unnecessary AudioOutput dependencies.

New qml base log replay status bar

Automated the generation of language resources into the application
Added all languages that come from Crowdin, even if empty.
Allow dynamic language changes

Fixed places where the font family was not being defined (therefore using the default system font)

Restore QGC to its normal UI layout (buttons on toolbar)

Get rid of QGCView, QGCViewPanel and FactPanel. All messages and dialogs are now handled in the root window.

TODO: Improve the experience

Move cache location methods so they are available in all builds

Add missing header

Add --clear-cache option