Fixed various issues with commenting on recently deleted posts

web/react/components/post_info.jsx

@@ -126,7 +126,7 @@ export default class PostInfo extends React.Component {
             lastCommentClass = ' comment-icon__container__show';
         }
 
-        if (this.props.commentCount >= 1 && post.state !== Constants.POST_FAILED && post.state !== Constants.POST_LOADING) {
+        if (this.props.commentCount >= 1 && post.state !== Constants.POST_FAILED && post.state !== Constants.POST_LOADING && post.state !== Constants.POST_DELETED) {
             comments = (
                 <a
                     href='#'

web/react/components/post_list.jsx

@@ -556,6 +556,11 @@ export default class PostList extends React.Component {
             var post = posts[order[i]];
             var parentPost = posts[post.parent_id];
 
+            // If the post is a comment whose parent has been deleted, don't add it to the list.
+            if (parentPost && parentPost.state === Constants.POST_DELETED) {
+                continue;
+            }
+
             var sameUser = false;
             var sameRoot = false;
             var hideProfilePic = false;