hook up dashboard url
add css
add dashboard html
create dashboard view
Update service rating to use c3
Remove css unused
PEP8 stuff
Merge branch 'develop' into feature/issue-23-service-rating-dashboard

Fix Conflicts:
	servicerating/urls.py
	servicerating/views.py
Merge pull request #23 from praekelt/feature/issue-23-service-rating-dashboard

Service rating dashboard