Added DB migration to support storing SMTP settings as independent objects

db/migrations/20160221001538_0.1.2_store-smtp-settings.sql

@@ -0,0 +1,14 @@
+
+-- +goose Up
+-- SQL in section 'Up' is executed when this migration is applied
+ALTER TABLE campaigns ADD COLUMN smtp_id bigint;
+UPDATE campaigns SET smtp_id = (SELECT smtp.smtp_id FROM smtp) WHERE campaigns.id = (SELECT smtp.smtp_id FROM smtp,campaigns WHERE smtp.campaign_id=campaigns.id);  -- sure hope the current smtp table works like I think it does
+
+ALTER TABLE smtp RENAME TO smtp_old;
+CREATE TABLE smtp(id integer primary key autoincrement,host varchar(255),username varchar(255),from_address varchar(255) ,ignore_cert_errors BOOLEAN);
+INSERT INTO smtp SELECT smtp_id AS id,host,username,from_address,ignore_cert_errors FROM smtp_old;
+DROP TABLE smtp_old;
+
+-- +goose Down
+-- SQL section 'Down' is executed when this migration is rolled back
+