add webapp-strip-content
remove l10n.js
use l20n.js
update l10n-id
no inline
switch panel translation API
switch airplane_mode to l20n
switch battery.js to l20n
switch security_privacy to l20n
switch storage to l20n
update utils+connectivity
make l20n.js async as it speeds up for us
reset _ changes to connectivity.js
fix a typo