Pontoon: Update Greek (el) localization of WebThings Gateway
Pontoon: Update Greek (el) localization of WebThings Gateway

Localization authors:
- Jim Spentzos <jimspentzos2000@gmail.com>

moziot/gateway,mozilla-iot/gateway,mozilla-iot/gateway,moziot/gateway,mozilla-iot/gateway,mozilla-iot/gateway,moziot/gateway,mozilla-iot/gateway