Upgraded group operators and videolist modules.

diff --git a/mod/group_operators b/mod/group_operators
index f3983fbf70975112e2f6aca716f10ebc402d43f0..68c44bacd74addb0b91ce26ec8631d76abf97276 160000 (submodule)
--- a/mod/group_operators
+++ b/mod/group_operators
@@ -1 +1 @@
-Subproject commit f3983fbf70975112e2f6aca716f10ebc402d43f0
+Subproject commit 68c44bacd74addb0b91ce26ec8631d76abf97276

diff --git a/mod/videolist b/mod/videolist
index 4585e371857636c1dece9978fba65d978a3afc78..785059957b1d589b1b9eb2e529e6373a60594e0b 160000 (submodule)
--- a/mod/videolist
+++ b/mod/videolist
@@ -1 +1 @@
-Subproject commit 4585e371857636c1dece9978fba65d978a3afc78
+Subproject commit 785059957b1d589b1b9eb2e529e6373a60594e0b