add status to export

lib/submissions/generate_export_files.rb

@@ -103,6 +103,10 @@ module Submissions
           name: column_name(I18n.t('phone'), submitter_name, submitters_count),
           value: submitter.phone
         },
+        {
+          name: column_name(I18n.t('status'), submitter_name, submitters_count),
+          value: submitter.status
+        },
         {
           name: column_name(I18n.t('completed_at'), submitter_name, submitters_count),
           value: submitter.completed_at.to_s