add indexed status totals for report
update review in ReviewsController
remove date helper module
edit report's reviews if pending
travese through user's reports history
remove skill reviews table and model
remove summary model, controller and all related tests
add 'total'to index status totals
return all used skills for report
Fix merge conflicts in new-front-end and front-back-integration
Merge branch 'backend' into front-back-integration

Conflicts:
	app/views/interns/dashboard.html.erb
scope links in dashboard to current user
refactor group by method
calculate intern's AVG happiness level
assign outcome review to report on #create
retrieve intern's used skills
calculate intern's top 3 skills used
calculate outcomes streak
refactor status indexing into ReportStats class
remove deprecated columns from skills table