created basic dashboard  with default nvd3 data
fixed PERSON_TYPE_CHOICES based on introspection of data from database
added SEARCH_TYPE_CHOICES to models.py
further updates on the agency dashboard mockup based on SME feedback
fast-forward dashboard to master
consumed search api for plotting
added JS and  html changes
Merge branch 'master' into dashboard

Conflicts:
	traffic_stops/templates/base.html
likelihood of stops live-chart added
added backbone and refactored JS models to use
add dummy plots for other figures until API is completed
refactor api to use common query
simplify stops_by_reason, add use_of_force
Merge branch 'dashboard'