[NANOHUB][#267497][COM_STORE] Fixed case where list element would have two class attributes which isn't valid
[NANOHUB][#267497][COM_STORE] Fixed case where list element would have two class attributes which isn't valid

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