Pontoon: Update Greek (el) localization of Test Pilot Website
Pontoon: Update Greek (el) localization of Test Pilot Website

Localization authors:
- Jim Spentzos <jim.spentzos@outlook.com>

flodolo/testpilot,mozilla/idea-town-server,mozilla/idea-town,meandavejustice/testpilot,lmorchard/idea-town-server,mozilla/idea-town,mozilla/idea-town-server,lmorchard/idea-town,lmorchard/testpilot,flodolo/testpilot,meandavejustice/testpilot,lmorchard/idea-town-server,lmorchard/testpilot,mozilla/idea-town,lmorchard/idea-town-server,mozilla/idea-town,lmorchard/testpilot,mozilla/idea-town-server,meandavejustice/testpilot,flodolo/testpilot,mozilla/idea-town-server,lmorchard/idea-town,lmorchard/idea-town,flodolo/testpilot,lmorchard/idea-town,lmorchard/idea-town-server,lmorchard/testpilot,meandavejustice/testpilot