Merge pull request #10 from vuthao/develop

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Merge pull request #11 from vuthao/develop

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Merge pull request #12 from vuthao/develop

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Merge pull request #13 from vuthao/develop

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Module News: Fix lang admin_vi.php
Module Users: Fix lang admin_vi.php
Add default variable in config global
Merge remote-tracking branch 'nukeviet/develop' into develop
Add facebook auth to login and register
Merge pull request #22 from hoaquynhtim99/develop

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