SAK-23349: VI-43. Hide video after call automatically.

git-svn-id: https://source.sakaiproject.org/svn/portal/branches/SAK-23349@125457 66ffb92e-73f9-0310-93c1-f5514f145a0a
SAK-23349: VI-43. Hide video after call automatically and reset video bar.

git-svn-id: https://source.sakaiproject.org/svn/portal/branches/SAK-23349@125458 66ffb92e-73f9-0310-93c1-f5514f145a0a