[Pidgin] #13255: Updated bengali (bn) Translation

[Pidgin]

#13255: Updated bengali (bn) Translation
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Reporter:  israt_tithi  |        Type:  translation 
  Status:  new          |   Component:  pidgin (gtk)
 Version:  2.7.9        |    Keywords:              
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Ticket URL: <http://developer.pidgin.im/ticket/13255>
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