WIP: Update the parent table to hold a reference to a language

Update the data uploader script to read the language from the csv and update the language information for any parent items that already exist (or create database entries if none already exist)

app/services/survey_responses_data_loader.rb

@@ -108,6 +108,7 @@ class SurveyResponsesDataLoader
     if row.respondent_type == :parent
       parent = Parent.find_or_create_by(response_id: row.response_id)
       parent.number_of_children = row.number_of_children
+      parent.language = row.language
       parent.save
     end