🎨 评论不校验邮箱

账号体系迁移到基于 GitHub 后为了保护用户隐私，授权登录后邮箱是返回空的，所以评论时不能校验邮箱

src/main/java/org/b3log/solo/service/CommentMgmtService.java

@@ -58,7 +58,7 @@ import java.util.Date;
  * Comment management service.
  *
  * @author <a href="http://88250.b3log.org">Liang Ding</a>
- * @version 1.3.3.4, Jan 28, 2019
+ * @version 1.3.3.5, Feb 21, 2019
  * @since 0.3.5
  */
 @Service
@@ -315,15 +315,6 @@ public class CommentMgmtService {
                 return ret;
             }
 
-            final String commentEmail = requestJSONObject.getString(Comment.COMMENT_EMAIL).trim().toLowerCase();
-
-            if (!Strings.isEmail(commentEmail)) {
-                LOGGER.log(Level.WARN, "Comment email is invalid[{0}]", commentEmail);
-                ret.put(Keys.MSG, langPropsService.get("mailInvalidLabel"));
-
-                return ret;
-            }
-
             final String commentURL = requestJSONObject.optString(Comment.COMMENT_URL);
 
             if (!Strings.isURL(commentURL) || StringUtils.contains(commentURL, "<")) {

skins @ a0daa3f9

-Subproject commit 3a5132b6ba245f04deab73e914c4de78df1cce07
+Subproject commit a0daa3f9e2bd932cb6addefe573e2de5dfcf032a