Add ability to match many domains for credentials

Instead of fetching one domain, we use the same method as in site config (to retrieve the matching file) and handle api.example.org, example.org, .org (yes the last one isn’t useful).
If one of these match, we got it and use it.

src/Wallabag/CoreBundle/Repository/SiteCredentialRepository.php

@@ -19,16 +19,16 @@ class SiteCredentialRepository extends \Doctrine\ORM\EntityRepository
     /**
      * Retrieve one username/password for the given host and userId.
      *
-     * @param string $host
-     * @param int    $userId
+     * @param array $hosts  An array of host to look for
+     * @param int   $userId
      *
      * @return array|null
      */
-    public function findOneByHostAndUser($host, $userId)
+    public function findOneByHostsAndUser($hosts, $userId)
     {
         $res = $this->createQueryBuilder('s')
             ->select('s.username', 's.password')
-            ->where('s.host = :hostname')->setParameter('hostname', $host)
+            ->where('s.host IN (:hosts)')->setParameter('hosts', $hosts)
             ->andWhere('s.user = :userId')->setParameter('userId', $userId)
             ->setMaxResults(1)
             ->getQuery()