Issue #414: Upgrade to xerces 2.11.0 Done.
Issue #414: Upgrade to xerces 2.11.0
Done.

JKereliuk/phenotips,itaiGershtansky/phenotips,teyden/phenotips,DeanWay/phenotips,veronikaslc/phenotips,alexhenrie/phenotips,alexhenrie/phenotips,teyden/phenotips,danielpgross/phenotips,teyden/phenotips,phenotips/phenotips,teyden/phenotips,itaiGershtansky/phenotips,mjshepherd/phenotips,JKereliuk/phenotips,mjshepherd/phenotips,teyden/phenotips,danielpgross/phenotips,tmarathe/phenotips,phenotips/phenotips,alexhenrie/phenotips,tmarathe/phenotips,mjshepherd/phenotips,tmarathe/phenotips,DeanWay/phenotips,phenotips/phenotips,phenotips/phenotips,veronikaslc/phenotips,phenotips/phenotips,DeanWay/phenotips,JKereliuk/phenotips,itaiGershtansky/phenotips,veronikaslc/phenotips,danielpgross/phenotips