Pontoon: Update Czech (cs) localization of Test Pilot Website
Pontoon: Update Czech (cs) localization of Test Pilot Website

Localization authors:
- Michal Stanke <mstanke@mozilla.cz>

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