update theme

diff --git a/lib/ircam-www-theme b/lib/ircam-www-theme
index 3a0e3e29195e42e4c50519d7c657bbe20c07b2a9..ce9cf31c2d3115f51c88826cd06a48701b843282 160000 (submodule)
--- a/lib/ircam-www-theme
+++ b/lib/ircam-www-theme
@@ -1 +1 @@
-Subproject commit 3a0e3e29195e42e4c50519d7c657bbe20c07b2a9
+Subproject commit ce9cf31c2d3115f51c88826cd06a48701b843282