Revert "Bump Ember to 2.7.1"
Revert "Bump Ember to 2.7.1"

This reverts commit 973ac02127dba2b320b979660269ecc735088ce5.

Need to hold off on this until we have a strategy of how to handle
errors when users visit '/'. Preferable solution is to fix the custom
location, but that will take time.

fotinakis/travis-web,travis-ci/travis-web,travis-ci/travis-web,fotinakis/travis-web,fotinakis/travis-web,travis-ci/travis-web,fotinakis/travis-web,travis-ci/travis-web