Pontoon: Update Gujarati (gu-IN) localization of AMO
Pontoon: Update Gujarati (gu-IN) localization of AMO

Localization authors:
- Siddhi Dave <siddhi_dave@yahoo.in>
- tripatmu <tripatmu@oregonstate.edu>
- Hariom Panchal <hariompanchal6647@hotmail.com>
- pratikmdabhi <pratikmdabhi@gmail.com>
- Mohammad Yahya <mohmmadyahyam@gmail.com>

wagnerand/addons-server,psiinon/addons-server,mozilla/olympia,bqbn/addons-server,psiinon/addons-server,mozilla/olympia,eviljeff/olympia,bqbn/addons-server,mozilla/addons-server,bqbn/addons-server,wagnerand/addons-server,mozilla/addons-server,eviljeff/olympia,wagnerand/addons-server,mozilla/addons-server,diox/olympia,diox/olympia,eviljeff/olympia,wagnerand/addons-server,mozilla/addons-server,psiinon/addons-server,mozilla/olympia,psiinon/addons-server,bqbn/addons-server,mozilla/olympia,diox/olympia,eviljeff/olympia,diox/olympia