All String should be localizable #1136
Description
All manifest strings can be able to use localized strings for internationalization.
They should support at lease two types of definitions:
- Direct one string for one language only
"name": "Web App" // English only
or
"name": "网站应用" // Chinese Only
- 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
...