Pontoon: Update Icelandic (is) localization of AMO
Pontoon: Update Icelandic (is) localization of AMO

Co-authored-by: Sveinn í Felli <30a262ee0cddf15a17abb23e11148aa362a8bb02@fellsnet.is>

wagnerand/addons-server,mozilla/olympia,mozilla/addons-server,diox/olympia,mozilla/addons-server,wagnerand/addons-server,mozilla/olympia,mozilla/olympia,wagnerand/addons-server,mozilla/olympia,wagnerand/addons-server,diox/olympia,mozilla/addons-server,diox/olympia,mozilla/addons-server,diox/olympia