add feed output orbithashtag

app/models/bulletin.rb

@@ -447,6 +447,9 @@ class Bulletin
       b["url"] = ("#{base_url}" + bf.file.url rescue "")
       a["bulletin_files"] << b
     end
+    a["orbithashtags"] = self.hashtags.map do |h| 
+      {"name" => h.name.to_s} 
+    end.compact.uniq rescue []
     return a
   end
   def get_related_feeds