convert mozSettings to use IndexedDB instead of localStorage. This seems to fix https://github.com/andreasgal/gaia/issues/403#issuecomment-4071981
convert mozSettings to use IndexedDB instead of localStorage. This seems to fix https://github.com/andreasgal/gaia/issues/403#issuecomment-4071981

yurydelendik/gaia,yurydelendik/gaia