Group up existing components into elements

elements/Comments/Comments.pixy

@@ -0,0 +1,14 @@
+component Comments(parent arn.PostParent, user *arn.User)
+	.posts
+		if user != nil
+			if arn.IsLocked(parent)
+				footer.footer.mountable
+					p.text-center= "This " + strings.ToLower(reflect.TypeOf(parent).Elem().Name()) + " is locked."
+			else if parent.TypeName() != "Group" || parent.(*arn.Group).FindMember(user.ID) != nil
+				NewPostArea(parent, user, "Comment")
+		
+		//- if parent.CountPosts() == 0
+		//- 	p.no-data.mountable No comments have been written yet.
+		//- else
+		each post in parent.PostsRelevantFirst(5)
+			Postable(post, user, true, false, "")