Test downcased SAVE_AND_RETURN_ENABLED env var
Test downcased SAVE_AND_RETURN_ENABLED env var

downcase the value of SAVE_AND_RETURN_ENABLED

Template deploy converts 'true' in the deploy repo to "True" when the 
env var is read, by the ruby code. This commit makes the value work
to enable the feature, and means we can still unset the feature by 
changing it to 'false'

ministryofjustice/tax-tribunals-datacapture,ministryofjustice/tax-tribunals-datacapture,ministryofjustice/tax-tribunals-datacapture,ministryofjustice/tax-tribunals-datacapture