Add initial event tracking handling
Remove unused params. DI postal on guidance
Add search filter event to tracking
Swap piwik out for GA
Fix JSHint warnings
Setup GA using env var
Add GA domain as env var
Add further event tracking
Track non angular pages in analytics
Give karma test the whole app, not just one module
Handle ga call if analytics isn't installed
Reorder scroll to call in assign provider
Clean out screenshots on gulp build
Refactor e2e test to be more robust
Merge pull request #430 from ministryofjustice/feature/analytics

Add analytics and event tracking