Added port to sqlsrv settings

Most installations won't work without it.

Author: FrittenKeeZ

config/database.php

@@ -70,6 +70,7 @@
         'sqlsrv' => [
             'driver' => 'sqlsrv',
             'host' => env('DB_HOST', 'localhost'),
+            'port' => env('DB_PORT', '1433'),
             'database' => env('DB_DATABASE', 'forge'),
             'username' => env('DB_USERNAME', 'forge'),
             'password' => env('DB_PASSWORD', ''),