Improve code readability

docs/migration.sql

@@ -1,10 +1 @@
--- Create report table
-CREATE TABLE `comunic_reports` (
-  `id` INT NOT NULL AUTO_INCREMENT,
-  `user_id` INT NOT NULL,
-  `target_type` VARCHAR(25) NOT NULL,
-  `target_id` INT NOT NULL,
-  `time` INT NOT NULL,
-  `cause` VARCHAR(20) NOT NULL,
-  `comment` TEXT NULL,
-  PRIMARY KEY (`id`));
+-- Nothing yet