Limit providers loop to distinct providers (#323)

Author: dcollie2

app/services/language_content_processor.rb

@@ -82,7 +82,7 @@ def process_language_content!
       FileUploadJob.perform_later(language.id, file_id.to_s)
     end
 
-    language.providers.find_each do |provider|
+    language.providers.distinct.find_each do |provider|
       FileUploadJob.perform_later(language.id, nil, provider.id)
     end
   end