update themes

diff --git a/lib/mezzanine-organization-themes b/lib/mezzanine-organization-themes
index 5f04a06f71e6ea6de70445101d9d4fb4eb29d603..898aa3f81cb3db53992a77f0425f34f2cd8f7670 160000 (submodule)
--- a/lib/mezzanine-organization-themes
+++ b/lib/mezzanine-organization-themes
@@ -1 +1 @@
-Subproject commit 5f04a06f71e6ea6de70445101d9d4fb4eb29d603
+Subproject commit 898aa3f81cb3db53992a77f0425f34f2cd8f7670