Pontoon: Update Bengali (bn-BD) localization of Test Pilot Website
Pontoon: Update Bengali (bn-BD) localization of Test Pilot Website

Localization authors:
- S M Sarwar Nobin <smsarwar1996@gmail.com>
- Mahay Alam Khan <mahayalamkhan@gmail.com>

fzzzy/testpilot,mozilla/idea-town,fzzzy/testpilot,mathjazz/testpilot,mathjazz/testpilot,lmorchard/testpilot,lmorchard/idea-town-server,meandavejustice/testpilot,flodolo/testpilot,meandavejustice/testpilot,lmorchard/idea-town,lmorchard/idea-town-server,meandavejustice/testpilot,mozilla/idea-town-server,fzzzy/testpilot,lmorchard/idea-town,mozilla/idea-town,chuckharmston/testpilot,lmorchard/testpilot,lmorchard/testpilot,flodolo/testpilot,chuckharmston/testpilot,mozilla/idea-town-server,lmorchard/idea-town-server,mozilla/idea-town-server,mozilla/idea-town,mozilla/idea-town,flodolo/testpilot,lmorchard/idea-town-server,lmorchard/idea-town,chuckharmston/testpilot,chuckharmston/testpilot,meandavejustice/testpilot,flodolo/testpilot,lmorchard/testpilot,mathjazz/testpilot,lmorchard/idea-town,mozilla/idea-town-server,fzzzy/testpilot,mathjazz/testpilot