Bengali fonts package od knjhaveri

-Bengali script fallback fonts for Firefox (Android edition)
Addon installs Bengali font (Lohit-Bengali.ttf under SIL OFL 1.1 license) that enables proper rendering of
Bengali script on all sites (Facebook, Twitter, Google, etc.),
regardless of whether a font has been embedded into the web page or intalled on the system.
Based off Gujarati Addon.