LDEV-1257: Tweaking the collection tests when copying the groups - need to check that they aren't null as Hibernate may not have created empty groups yet.
LDEV-1257: Added support for Groups to be created in authoring (so that the names can be entered) and the mapping table to map groups to a sequence activity (ala branch) for a Group based branching activity.
fixed learner icon bug where icon would hide behind activities if moving from an optional activity - fixed depth issue by creating a container for the learnerIcon(s)
fixes from todays test session: learner progress to scroll to current act when initially loaded + fix double var use in learner tab and container depths