[VHUB][#1081][PLG_EDITORS_TINYMCE] fix undefined var, use facade instead
[VHUB][#1081][PLG_EDITORS_TINYMCE] fix undefined var, use facade instead

zweidner/hubzero-cms,zooley/hubzero-cms,anthonyfuentes/hubzero-cms,zweidner/hubzero-cms,zweidner/hubzero-cms,zooley/hubzero-cms,anthonyfuentes/hubzero-cms,zweidner/hubzero-cms,anthonyfuentes/hubzero-cms,zooley/hubzero-cms,zooley/hubzero-cms,anthonyfuentes/hubzero-cms