MH-8100 Some UI improvements

git-svn-id: https://opencast.jira.com/svn/MH/branches/MH-8100@14803 e6edf6fb-f266-4316-afb4-e53d95876a76
MH-8100 Some UI improvements #2

git-svn-id: https://opencast.jira.com/svn/MH/branches/MH-8100@14804 e6edf6fb-f266-4316-afb4-e53d95876a76