added Helper Class to create new facets from XLS files.
Merge branch 'master' of github.com:matiasf/leecenso

Conflicts:
	frontend/viviendas.html
Added Personas facet codes to the utilites.js file.
Adjusts graph position
Merge branch 'master' of github.com:matiasf/leecenso

Conflicts:
	frontend/js/personas-solr.js
	frontend/js/utilities.js
	frontend/js/vivienda-solr.js
	frontend/js/widgets/ChartWidget.js
	frontend/personas.html