Merge pull request #10 from vuthao/develop

Develop
Merge pull request #11 from vuthao/develop

Develop
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 pull request #17 from vuthao/develop

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Merge pull request #18 from vuthao/develop

optimizer check support rewrite
Merge pull request #19 from vuthao/develop

Fix install step 1
Merge pull request #20 from vuthao/develop

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Merge pull request #21 from vuthao/develop

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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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Merge pull request #23 from vuthao/develop

Module User: Add Language Custom User Fields
Merge pull request #8 from nukeviet/develop

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