Changed it so you can only nest on comments with an ID, which means old

comments can't be replied to. OH, I reverted the change from using
CompiledYamlFile because I don't like how the RocketTheme Yaml dump is
setup, it breaks comments up onto multiple lines. Thus, I also removed
the reply button on those comments. You can still attempt to reply to a
comment if you're hacking around the frontend, but as long as the
comment doesn't have an ID it shouldn't work. TODO: Make the backend
comment panel work again.

templates/partials/comments.html.twig

@@ -48,7 +48,7 @@
 									{{nested}}
 									<div class="comment-footer">
 										<span class="comment-reply">
-											{% if grav.twig.commenting_enabled %}
+											{% if grav.twig.commenting_enabled and comment.id %}
 												<a class="comment-add-reply" href="#"><i class="fa fa-reply" title="{{'PLUGIN_COMMENTS.ADD_REPLY'|t}}"></i> {{'PLUGIN_COMMENTS.REPLY'|t}}</a>
 											{% endif %}
 											{% if grav.user.access.admin.super %}