i18n: update translations

Change-Id: I6a2ac198bf1ab6f773994c478ee4c34ee8498348
diff --git a/ring-android/app/src/main/res/values-es/strings.xml b/ring-android/app/src/main/res/values-es/strings.xml
index 087053a..6fdf457 100644
--- a/ring-android/app/src/main/res/values-es/strings.xml
+++ b/ring-android/app/src/main/res/values-es/strings.xml
@@ -113,4 +113,7 @@
   <string name="conversation_action_select_peer_number">Escoge un número</string>
   <!--Contacts-->
   <string name="add_call_contact_number_to_contacts">¿Añadir %1$s ?</string>
+  <string name="prompt_new_password">Contraseña nueva</string>
+  <!--MenuHeaderView-->
+  <string name="unknown">Desconocido</string>
 </resources>