Added to/from date hashing
Merge branch 'master' of https://github.com/psybuzz/cs467-email-visualization

Conflicts:
	app.js
Merge branch 'master' of https://github.com/psybuzz/cs467-email-visualization
Merge branch 'master' of https://github.com/psybuzz/cs467-email-visualization
Serve stats on GET to /data