Pontoon: Update Chinese (zh-CN) localization of Test Pilot Website
Pontoon: Update Chinese (zh-CN) localization of Test Pilot Website

Localization authors:
- YFdyh000 <yfdyh000@gmail.com>
- Matjaž Horvat <matjaz.horvat@gmail.com>

lmorchard/idea-town,mathjazz/testpilot,6a68/testpilot,dannycoates/testpilot,clouserw/testpilot,lmorchard/testpilot,chuckharmston/testpilot,flodolo/testpilot,mozilla/idea-town,mathjazz/testpilot,mozilla/idea-town-server,lmorchard/idea-town-server,dannycoates/testpilot,lmorchard/idea-town-server,mathjazz/testpilot,meandavejustice/testpilot,chuckharmston/testpilot,fzzzy/testpilot,6a68/idea-town,meandavejustice/testpilot,mozilla/idea-town-server,fzzzy/testpilot,mozilla/idea-town,clouserw/testpilot,lmorchard/testpilot,meandavejustice/testpilot,flodolo/testpilot,6a68/testpilot,lmorchard/idea-town-server,clouserw/testpilot,6a68/idea-town,meandavejustice/testpilot,6a68/testpilot,clouserw/testpilot,lmorchard/idea-town-server,fzzzy/testpilot,mozilla/idea-town-server,6a68/idea-town,lmorchard/testpilot,lmorchard/testpilot,fzzzy/testpilot,mathjazz/testpilot,6a68/idea-town,lmorchard/idea-town,flodolo/testpilot,mozilla/idea-town,mozilla/idea-town,chuckharmston/testpilot,lmorchard/idea-town,lmorchard/idea-town,6a68/testpilot,dannycoates/testpilot,flodolo/testpilot,chuckharmston/testpilot,mozilla/idea-town-server,dannycoates/testpilot