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

Localization authors:
- Belayet Hossain <bellayet@gmail.com>

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