Added the endpoints for subscribing to email notifications for subscribed searches.
Added two migration files, one for adding columns for the receive_email in search_subscription and Search. And one for deleting all entries in the tables search and search_subscription.
Added the endpoints for subscribing to email notifications for subscribed searches. Added two migration files, one for adding columns for the receive_email in search_subscription and Search. And one for deleting all entries in the tables search and search_subscription.