Pontoon: Update Spanish (Argentina) (es-AR) localization of Test Pilot Website
Pontoon: Update Spanish (Argentina) (es-AR) localization of Test Pilot Website

Localization authors:
- Gabriela <gmontagu@gmail.com>

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