[NCIP][#1115][PLG_GROUPS_ANNOUNCEMENTS] Skip accounts with invalid email addresses when sending an announcement
[NCIP][#1115][PLG_GROUPS_ANNOUNCEMENTS] Skip accounts with invalid email addresses when sending an announcement

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