do not require reference uri in advsearch

[serve0] / cgilite

diff --git a/cgilite b/cgilite
index cbd426df72dee35e5920de18084ca6770454481d..d490f720aed2ad75f580ac526f83c581d659633b 160000 (submodule)
--- a/cgilite
+++ b/cgilite
@@ -1 +1 @@
-Subproject commit cbd426df72dee35e5920de18084ca6770454481d
+Subproject commit d490f720aed2ad75f580ac526f83c581d659633b