mapsettings - format options model

Something is broken as for now, the view does not refresh after having
selected an output format. Can't figure out why yet.
mapsettings - outputformat options model (WIP)

Still cannot get it ><
mapsettings - outputformats

Still failing, giving up :-(
Mapsettings - outputformat - format options

Fixing model / refresh / sync with view, thanks @gurneyalex