After reading and talking with experts I came to the conclusion that es-es and es-419 (and such) dont differ that much. Latin-American Spanish (es-419) is a good idea, but we are not in a rush. So linked es to es-es. That's the proper way to do. See also https://github.com/redmatrix/hubzilla/issues/234#issuecomment-167117960

1 files changed, 1 insertions, 1 deletions

diff --git a/view/es b/view/es
index 14270c445..55914a5c4 120000
--- a/view/es
+++ b/view/es
@@ -1 +1 @@
-.es-419/
\ No newline at end of file
+es-es/
\ No newline at end of file