Add missing instance var for /manage & Bust rails cache on comments (#3004)

app/controllers/articles_controller.rb

@@ -84,6 +84,7 @@ class ArticlesController < ApplicationController
     @rating_vote = RatingVote.where(article_id: @article.id, user_id: @user.id).first
     @buffer_updates = BufferUpdate.where(composer_user_id: @user.id, article_id: @article.id)
     @organization = @user&.organization
+    @org_members = @organization.users.pluck(:name, :id) if @organization
   end
 
   def preview

app/labor/cache_buster.rb

@@ -21,6 +21,7 @@ class CacheBuster
         bust("/?i=i")
         bust("?i=i")
       end
+      commentable.touch(:last_comment_at)
       bust("#{commentable.path}/comments/")
       bust(commentable.path.to_s)
       commentable.comments.includes(:user).find_each do |c|