Add a link between accompanying period and user

It is now allowed to indicates who make/made the accompanying period.

This feature may be hidden by a specific configuration option. Default
to visible.

Resources/migrations/Version20190701124238.php

@@ -0,0 +1,24 @@
+<?php declare(strict_types=1);
+
+namespace Application\Migrations;
+
+use Doctrine\DBAL\Schema\Schema;
+use Doctrine\Migrations\AbstractMigration;
+
+/**
+ * Add a link between accompanying periods and users
+ */
+final class Version20190701124238 extends AbstractMigration
+{
+    public function up(Schema $schema) : void
+    {
+				$this->addSql('ALTER TABLE chill_person_accompanying_period ADD user_id INT DEFAULT NULL;');
+				$this->addSql('ALTER TABLE chill_person_accompanying_period ADD CONSTRAINT FK_E260A868A76ED395 FOREIGN KEY (user_id) REFERENCES users (id) NOT DEFERRABLE INITIALLY IMMEDIATE;');
+				$this->addSql('CREATE INDEX IDX_E260A868A76ED395 ON chill_person_accompanying_period (user_id);');
+    }
+
+    public function down(Schema $schema) : void
+    {
+				$this->addSql('ALTER TABLE chill_person_accompanying_period DROP user_id');
+    }
+}