Complete proofreading and addition for zh-CN YML translations (#2445)

* proofread & update zh-CN setting form locale

* Pull in new devise zh-CN translations from their wiki

https://github.com/plataformatec/devise/wiki/I18n,
more precisely https://gist.github.com/Artoria2e5/6d2a06ca9e92a417afc627b5000f4690

* pull in zh-CN translation for doorkeeper

... from https://github.com/doorkeeper-gem/doorkeeper-i18n/pull/31/

config/locales/doorkeeper.zh-CN.yml

@@ -0,0 +1,127 @@
+# from https://github.com/doorkeeper-gem/doorkeeper-i18n/pull/31/
+zh-CN:
+  activerecord:
+    attributes:
+      doorkeeper/application:
+        name: '名称'
+        redirect_uri: '登录回调地址'
+        scopes: '权限范围'
+    errors:
+      models:
+        doorkeeper/application:
+          attributes:
+            redirect_uri:
+              fragment_present: '不能包含片段（#）'
+              invalid_uri: '必须是有效的 URL 格式'
+              relative_uri: '必须是绝对的 URL 地址'
+              secured_uri: '必须是 HTTPS/SSL 的 URL 地址'
+
+  doorkeeper:
+    applications:
+      confirmations:
+        destroy: '确定要删除应用吗？'
+      buttons:
+        edit: '编辑'
+        destroy: '删除'
+        submit: '提交'
+        cancel: '取消'
+        authorize: '授权'
+      form:
+        error: '抱歉! 提交信息的时候遇到了下面的错误'
+      help:
+        redirect_uri: '每行只能有一个 URL'
+        native_redirect_uri: '使用 %{native_redirect_uri} 作为本地测试'
+        scopes: '用空格隔开权限范围，留空则使用默认设置'
+      edit:
+        title: '修改应用'
+      index:
+        title: '你的应用'
+        new: '创建新应用'
+        name: '名称'
+        callback_url: '登录回调地址'
+      new:
+        title: '创建新应用'
+      show:
+        title: '应用：%{name}'
+        application_id: '应用 ID'
+        secret: '私钥'
+        scopes: '权限范围'
+        callback_urls: '登录回调地址'
+        actions: '操作'
+
+    authorizations:
+      buttons:
+        authorize: '授权'
+        deny: '拒绝'
+      error:
+        title: '存在错误'
+      new:
+        title: '需要你授权'
+        prompt: '授权 %{client_name} 使用你的帐号?'
+        able_to: '此应用将会'
+      show:
+        title: '授权码'
+
+    authorized_applications:
+      confirmations:
+        revoke: '确定要注销此应用的认证信息吗?'
+      buttons:
+        revoke: '注销'
+      index:
+        title: '你授权的应用列表'
+        application: '应用'
+        created_at: '授权时间'
+        date_format: '%Y-%m-%d %H:%M:%S'
+
+    errors:
+      messages:
+        # Common error messages
+        invalid_request: '这个请求缺少必要的参数，或者参数值、格式不正确'
+        invalid_redirect_uri: '无效的登录回调地址'
+        unauthorized_client: '未授权的应用，请求无法执行'
+        access_denied: '用户或服务器拒绝了请求'
+        invalid_scope: '请求范围无效、未知或格式不正确'
+        server_error: '服务器异常，无法处理请求'
+        temporarily_unavailable: '服务器维护中或负载过高，暂时无法处理请求'
+
+        #configuration error messages
+        credential_flow_not_configured: 'Resource Owner Password Credentials flow failed，原因是 Doorkeeper.configure.resource_owner_from_credentials 尚未设置。'
+        resource_owner_authenticator_not_configured: 'Resource Owner find failed，原因是 Doorkeeper.configure.resource_owner_authenticator 尚未设置。'
+
+        # Access grant errors
+        unsupported_response_type: '服务器不支持这种响应类型'
+
+        # Access token errors
+        invalid_client: '由于未知、不支持或没有客户端，认证失败'
+        invalid_grant: '授权方式无效，或者登录回调地址无效、过期或已被撤销'
+        unsupported_grant_type: '服务器不支持此类型的授权方式'
+
+        # Password Access token errors
+        invalid_resource_owner: '资源所有者认证无效或没有所有者'
+
+        invalid_token:
+          revoked: "访问令牌已被吊销"
+          expired: "访问令牌已过期"
+          unknown: "访问令牌无效"
+
+    flash:
+      applications:
+        create:
+          notice: '应用创建成功'
+        destroy:
+          notice: '应用删除成功'
+        update:
+          notice: '应用修改成功'
+      authorized_applications:
+        destroy:
+          notice: '已成功注销了应用的认证信息'
+
+    layouts:
+      admin:
+        nav:
+          oauth2_provider: 'OAuth2 提供商'
+          applications: '应用'
+          home: '首页'
+      application:
+        title: 'OAuth 认证'
+