refactor: Refactor locales data loading script

Created by: leoendless

Signed-off-by: leoliu leoliu@yunify.com

What type of PR is this?

/kind optimization

What this PR does / why we need it:

The page should load the selected language package only.

Which issue(s) this PR fixes:

Fixes #

Special notes for reviewers:

Additional documentation, usage docs, etc.: