Update UserConfig schema

src/Wallabag/CoreBundle/Entity/Config.php

@@ -3,6 +3,7 @@
 namespace Wallabag\CoreBundle\Entity;
 
 use Doctrine\ORM\Mapping as ORM;
+use Symfony\Component\Validator\Constraints as Assert;
 
 /**
  * Config
@@ -15,16 +16,17 @@ class Config
     /**
      * @var integer
      *
-     * @ORM\Column(name="id", type="integer", nullable=false)
+     * @ORM\Column(name="id", type="integer")
      * @ORM\Id
-     * @ORM\GeneratedValue(strategy="IDENTITY")
+     * @ORM\GeneratedValue(strategy="AUTO")
      */
     private $id;
 
     /**
      * @var string
      *
-     * @ORM\Column(name="name", type="string", nullable=true)
+     * @Assert\NotBlank()
+     * @ORM\Column(name="name", type="string", nullable=false)
      */
     private $name;