All String should be localizable

[calidion]

All manifest strings can be able to use localized strings for internationalization.
They should support at lease two types of definitions:

1. Direct one string for one language only

"name":  "Web App"   // English only

or

"name":  "网站应用"  // Chinese Only

3. Multiple languages support

lang: "en",   // fallback language if browser meets none locale strings listed
"name":  {
"en":  "Web App",    // fallback for all en-* browsers or for general  en-* users
"en-US":  "Web App",   // specific string for localized en
"zh": "网站应用”， // fallback for all zh-* browsers  or for general  zh-* users
"zh-CN": "网站应用”， // specific string for localized zh
...

[christianliebel]

@calidion Thank you for reporting this issue. We are currently addressing this scenario as part of PR #1101. Feel free to subscribe to this PR and join the discussion there. I will close this issue as a duplicate of #676.