Draw the next people with QML instead of OpenGL

Also modify the QML layout to rely less on C++
Draw the strip texts with QML

Here the strategy changes a lot from the previous OpenGL code...
The text is rendered and scaled at painting time ! This may need
some optimisation work to make it fast enough. But the immediate
benefit is the internationalization since UTF-8 is supported.

Custom font and color are not yet supported.:wq
Draw the strip with a translated listview to improve performance