Add 'Year' for x axis switching
Mask –Infinity as 999999 in JSON and limit domain of utility graph
Merge branch 'develop' of https://github.com/RDCEP/chicagowebdice into develop

Conflicts:
	webdice_web/static/js/main.js
	webdice_web/static/js/meta_data.json
	webdice_web/static/js/stacked_chart.js
	webdice_web/views.py