OO-1225: remove save button for single choice in restricted mode, hardened event loop in the controller, fix the same kind of issue in essay
Merge OpenOLAT 9.4 to OpenOLAT default branch with efed9a2ddf4e31adbee6b56c042447cb1c51faf8
OO-1211: horizontal checkbox in user attributes bulk change
OO-1211 adding missing export icon, fix narrow spacing in toolbar dropdowns
OO-1209 adding context help for import EN, improve import button in editor