Developer's guide for internationalization

NOTE: All the files you created should be in UTF-8 encoding.

For the front-end i18n works,

You need to create a JavaScript i18n source file under the diretory /static/resources/js/services/i18n, it should be named as locale_messages_<language>_<locale>.js with your localized translations.

This file contains a JSON object named locale_messages, and the sample pattern should be like below,
```
var local_messages = {
	'sign_in': 'Sign In'
 };
```
NOTE: Please refer the keys which already exist in other i18n files to make your corresponding translations as your locale.

After creating this locale file, you should include it into the HTML page header template.

In the file, /views/sections/header-include.htm. This template would be rendered by the back-end controller, with checking the current language (.Lang) value from the request scope, at each time there is only one script tag would be rendered at front-end page.

{{ if eq .Lang "zh-CN" }}
   <script src="/static/resources/js/services/i18n/locale_messages_zh-CN.js"></script>
{{ else if eq .Lang "en-US"}}
   <script src="/static/resources/js/services/i18n/locale_messages_en-US.js"></script>
{{ else if eq .Lang "<language>-<locale>"}}
   <script src="/static/resources/js/services/i18n/locale_messages_<language>-<locale>.js"></script>
{{ end }}

Add the new coming language to the I18nService module.

In the file, /static/resources/js/services/i18n/services.i18n.js, append new key-value item to the supportLanguages object.
```
 var supportLanguages = {
  'en-US': 'English',
  'zh-CN': '中文',
  '<language>-<locale>': '<language_name>'
 };
```
NOTE: Don't miss to add a comma ahead of the new key-value item you've added.

For the back-end i18n works,

Create a file under the directory /static/i18n/, named as locale_<language>-<locale>.ini.

NOTE: Please refer the keys which already exist in other i18n files to make your corresponding translations as your locale.
Add the new comming language to the app.conf file.

In the file, /Deploy/config/ui/app.conf, append new item to the configuration section.
```
	 [lang]
	 types = en-US|zh-CN|<language>-<locale>
	 names = en-US|zh-CN|<language>-<locale>
```

Rebuild and start the Harbor project by using 'docker-compose' command.

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Developer's guide for internationalization

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