dump PGN in the log when an import fails

app/controllers/Importer.scala

@@ -31,7 +31,8 @@ object Importer extends LilaController {
         } inject Redirect(routes.Round.watcher(game.id, "white"))
       } recover {
         case e =>
-          logger.branch("importer").warn("sendGame", e)
+          logger.branch("importer").warn(
+            s"Imported game validates but can't be replayed:\n${data.pgn}", e)
           Redirect(routes.Importer.importGame)
       }
     )

app/controllers/Setup.scala

@@ -67,7 +67,7 @@ object Setup extends LilaController with TheftPrevention {
           ), {
             case config => userId ?? UserRepo.byId flatMap { destUser =>
               destUser ?? Challenge.restriction flatMap {
-                case Some(_) => 
+                case Some(_) =>
                   Redirect(routes.Lobby.home + s"?user=${~userId}#friend").fuccess
                 case None =>
                   import lila.challenge.Challenge._