Undo required strings

deltachat-ios/en.lproj/Localizable.strings

@@ -615,4 +615,6 @@
 "a11y_delivery_status_invalid" = "Invalid delivery status";
 "a11y_remove_account_btn_label" = "Remove account";
 "a11y_message_context_menu_btn_label" = "Message actions";
-"a11y_background_preview_label" = "Background preview";
+"a11y_background_preview_label" = "Background preview";
+"import_contacts" = "Import device contacts";
+"import_contacts_message" = "To chat with contacts from your device open Settings and enable Contacts.";