Pontoon: Update Swedish (sv-SE) localization of Firefox Screenshots
Pontoon: Update Swedish (sv-SE) localization of Firefox Screenshots

Localization authors:
- Andreas Pettersson <az@kth.se>

mozilla-services/screenshots,mozilla-services/pageshot,mozilla-services/pageshot,mozilla-services/screenshots,mozilla-services/screenshots,mozilla-services/pageshot,mozilla-services/pageshot,mozilla-services/screenshots