show "edited" in edited comment

src/main/twirl/gitbucket/core/helper/commitcomment.scala.html

@@ -13,6 +13,9 @@
         @helpers.avatarLink(comment.commentedUserName, 20)
         @helpers.user(comment.commentedUserName, styleClass="username strong")
         <span class="muted">@gitbucket.core.helper.html.datetimeago(comment.registeredDate)</span>
+        @if(comment.updatedDate.getTime > comment.registeredDate.getTime){
+          - edited
+        }
         <span class="pull-right">
         @if(hasWritePermission || context.loginAccount.map(_.userName == comment.commentedUserName).getOrElse(false)){
           <a href="#" data-comment-id="@comment.commentId"><i class="octicon octicon-pencil"></i></a>&nbsp;

src/main/twirl/gitbucket/core/issues/commentlist.scala.html

@@ -20,6 +20,9 @@
       <a href="#comment-@comment.commentId">
         @gitbucket.core.helper.html.datetimeago(comment.registeredDate)
       </a>
+      @if(comment.updatedDate.getTime > comment.registeredDate.getTime) {
+        - edited
+      }
     </span>
     @if(comment.action != "commit" && comment.action != "merge" && comment.action != "refer"
     && (isManageable || context.loginAccount.map(_.userName == comment.commentedUserName).getOrElse(false))){