[mezzanine-organization-themes] : update

diff --git a/lib/mezzanine-organization-themes b/lib/mezzanine-organization-themes
index 849a24d518a4f8e47575441f2a366ade58ec160a..97e72867352f98b7f10c49ea9df7768a2c68db8f 160000 (submodule)
--- a/lib/mezzanine-organization-themes
+++ b/lib/mezzanine-organization-themes
@@ -1 +1 @@
-Subproject commit 849a24d518a4f8e47575441f2a366ade58ec160a
+Subproject commit 97e72867352f98b7f10c49ea9df7768a2c68db8f