updating epl commit refs

diff --git a/etherpad-lite b/etherpad-lite
index 9534f9f1a1bf7b232231b3889e6030218704751d..78314805de2847d57780da3564cf1399cb9fd45e 160000 (submodule)
--- a/etherpad-lite
+++ b/etherpad-lite
@@ -1 +1 @@
-Subproject commit 9534f9f1a1bf7b232231b3889e6030218704751d
+Subproject commit 78314805de2847d57780da3564cf1399cb9fd45e