MH-8100 fixed and working now: Shortcut shift+c

git-svn-id: http://opencast.jira.com/svn/MH/branches/MH-8100@13677 e6edf6fb-f266-4316-afb4-e53d95876a76
MH-8100 fixed: Clicking on a segment does not change the playhead

git-svn-id: http://opencast.jira.com/svn/MH/branches/MH-8100@13678 e6edf6fb-f266-4316-afb4-e53d95876a76