Add Vietnamese localization support

[pnghai]

First of all, thanks for your contribution! :-)

Please makes sure these boxes are checked before submitting your PR, thank you!

• Make sure you propose PR to correct branch: bugfix for master, feature for latest active branch feature-x.x.
• Make sure you follow antd's code convention.
• Run npm run lint and fix those errors before submitting in order to keep consistent code style.
• Rebase before creating a PR to keep commit history clear.
• Add some descriptions and refer relative issues for you PR.

[mention-bot]

@pnghai, thanks for your PR! By analyzing the history of the files in this pull request, we identified @yesmeck, @afc163 and @RaoHai to be potential reviewers.

[benjycui]

Oops...... you should not mix others' commits into your PR.

[pnghai]

@benjycui I'm very sorry. I'm confused. As I've already commit to master branch, should I change request to master branch? Or should I revert and work on feature 2.10 branch?

[afc163]

You should checkout from and PR to feature-2.10.

[benjycui]

It's fine to PR to master, for we will publish a minor version this week.

[pnghai]

@benjycui Thank you very much.

[lock]

This thread has been automatically locked because it has not had recent activity. Please open a new issue for related bugs and link to relevant comments in this thread.