Made small path fix in brightcove.php

git-svn-id: https://plugins.svn.wordpress.org/brightcove-video-cloud/trunk@998200 b8457f37-d9ea-0310-8a92-e5e31aec5664
Made static path fixes to brightcove_admin.php

git-svn-id: https://plugins.svn.wordpress.org/brightcove-video-cloud/trunk@998201 b8457f37-d9ea-0310-8a92-e5e31aec5664