Get rid of ApplicationView.

Review Request #9677 — Created Feb. 19, 2018 and submitted — Latest diff uploaded

Information

student-sonar
master
21f9f9c...

Reviewers

This moves the final backbone view over to React, the application
wrapper. Along with this I've deleted a handful of utility classes
(CollectionView, FilteredCollection, GroupByCollection) that are no
longer used.

Loaded sonar and clicked around the app. Saw that everything worked as
expected.