[HUBZERO][#7235][PLG_PROJECTS_BLOG] fix unfound Publication class error when pub plugin os off
[HUBZERO][#7235][PLG_PROJECTS_BLOG] fix unfound Publication class error when pub plugin os off

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