Chrome<>Firefox audio problem resolved. Now full interoperable . SAK-23349

git-svn-id: https://source.sakaiproject.org/svn/portal/branches/SAK-23349@123793 66ffb92e-73f9-0310-93c1-f5514f145a0a
Add sakai properties to control video function. Modify video property from boolean to string.
SAK-23349.

git-svn-id: https://source.sakaiproject.org/svn/portal/branches/SAK-23349@123804 66ffb92e-73f9-0310-93c1-f5514f145a0a
Change this reference. SAK-23349

git-svn-id: https://source.sakaiproject.org/svn/portal/branches/SAK-23349@123805 66ffb92e-73f9-0310-93c1-f5514f145a0a