Write database configuration through dev-script.

src/pvv/side/dbactivity.php

@@ -6,9 +6,8 @@ use \PDO;
 
 class DBActivity implements RepeatingActivity {
 
-	public function __construct($dsn, $username, $password) {
-		$this->pdo = new PDO($dsn, $username, $password);
-		$this->pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
+	public function __construct(PDO $pdo) {
+		$this->pdo = $pdo;
 	}
 
 	public function getNextEventFrom(DateTimeImmutable $date) {