i18n: update

Change-Id: I1d9dfe81c86dcd72b488722937411e1a50fd2229
diff --git a/ui/pl.lproj/Localizable.strings b/ui/pl.lproj/Localizable.strings
index 096c484..2bd0d7a 100644
--- a/ui/pl.lproj/Localizable.strings
+++ b/ui/pl.lproj/Localizable.strings
@@ -1,6 +1,12 @@
 
 "Add to contacts" = "Dodaj do kontaków";
 
+/* Error shown to the user */
+"An error occured during the export" = "An error occured during the export";
+
+/* Error shown to the user */
+"An error occured during the import" = "An error occured during the import";
+
 /* Contextual menu action */
 "Call number" = "Zadzwoń na numer";