MT#6789 Add email template schema.

Add email templates for resellers.
Let contracts have email templates
Let subscribers have contacts.
Add password reset journal.

db_scripts/diff/15057.down

@@ -0,0 +1,11 @@
+USE billing;
+
+DROP TABLE email_templates;
+DROP TABLE password_resets;
+
+ALTER TABLE contracts 
+  DROP COLUMN subscriber_email_template_id,
+  DROP COLUMN passreset_email_template_id;
+
+ALTER TABLE voip_subscribers
+  DROP COLUMN contact_id;

db_scripts/diff/15057.up

@@ -0,0 +1,31 @@
+USE billing;
+
+CREATE TABLE `email_templates` (
+  `id` int(11) unsigned NOT NULL AUTO_INCREMENT,
+  `reseller_id` int(11) unsigned NOT NULL,
+  `name` varchar(255) NOT NULL,
+  `from_email` varchar(255) NOT NULL,
+  `subject` varchar(255) NOT NULL,
+  `body` mediumtext NOT NULL,
+  PRIMARY KEY (`id`),
+  UNIQUE KEY `reseller_name_idx` (`reseller_id`,`name`),
+  CONSTRAINT `fk_email_reseller` FOREIGN KEY (`reseller_id`) REFERENCES `resellers` (`id`) ON DELETE CASCADE ON UPDATE CASCADE
+) ENGINE=InnoDB;
+
+CREATE TABLE `password_resets` (
+  `id` int(11) unsigned NOT NULL AUTO_INCREMENT,
+  `subscriber_id` int(11) unsigned NOT NULL,
+  `uuid` char(36) NOT NULL,
+  `timestamp` int(11) unsigned NOT NULL,
+  PRIMARY KEY (`id`),
+  KEY `uuid_idx` (`uuid`),
+  KEY `fk_pwd_reset_sub` (`subscriber_id`),
+  CONSTRAINT `fk_pwd_reset_sub` FOREIGN KEY (`subscriber_id`) REFERENCES `voip_subscribers` (`id`) ON DELETE CASCADE ON UPDATE CASCADE
+) ENGINE=InnoDB;
+
+ALTER TABLE contracts 
+  ADD COLUMN subscriber_email_template_id INT(11) UNSIGNED DEFAULT NULL, 
+  ADD COLUMN passreset_email_template_id INT(11) UNSIGNED DEFAULT NULL;
+
+ALTER TABLE voip_subscribers
+  ADD COLUMN `contact_id` int(11) unsigned DEFAULT NULL;