[misc] Updated htmlcleaner to 2.16
[misc] Updated htmlcleaner to 2.16

alexhenrie/phenotips,teyden/phenotips,teyden/phenotips,phenotips/phenotips,phenotips/phenotips,tmarathe/phenotips,phenotips/phenotips,tmarathe/phenotips,phenotips/phenotips,teyden/phenotips,teyden/phenotips,alexhenrie/phenotips,phenotips/phenotips,teyden/phenotips,alexhenrie/phenotips,tmarathe/phenotips