doesn't look good for now, take it out, add it later

app/models/webhooks/slack/topic_added_to_map.rb

@@ -3,10 +3,7 @@ class Webhooks::Slack::TopicAddedToMap < Webhooks::Slack::Base
   def text
     "New #{eventable.mappable.metacode.name} topic *#{eventable.mappable.name}* was added to the map *#{view_map_on_metamaps()}*"
   end
-
-  def icon_url
-    eventable.mappable.metacode.icon
-  end
+  # todo: it would be sweet if it sends it with the metacode as the icon_url
 
   def attachment_fallback
     "" #{}"*#{eventable.name}*\n#{eventable.description}\n"