Added attachments to campaigns

setup/sql/upgrade-00019.sql

@@ -0,0 +1,21 @@
+# Header section
+# Define incrementing schema version number
+SET @schema_version = '19';
+
+CREATE TABLE `attachments` (
+  `id` int(11) unsigned NOT NULL AUTO_INCREMENT,
+  `campaign` int(11) unsigned NOT NULL,
+  `filename` varchar(255) CHARACTER SET utf8mb4 NOT NULL DEFAULT '',
+  `content_type` varchar(100) CHARACTER SET ascii NOT NULL DEFAULT '',
+  `content` longblob,
+  `size` int(11) NOT NULL,
+  `created` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
+  PRIMARY KEY (`id`),
+  KEY `campaign` (`campaign`),
+  CONSTRAINT `attachments_ibfk_1` FOREIGN KEY (`campaign`) REFERENCES `campaigns` (`id`) ON DELETE CASCADE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8;
+
+# Footer section
+LOCK TABLES `settings` WRITE;
+INSERT INTO `settings` (`key`, `value`) VALUES('db_schema_version', @schema_version) ON DUPLICATE KEY UPDATE `value`=@schema_version;
+UNLOCK TABLES;