Remember that time I thought we were gonna use Rails 4?

This reverts commit 1172cc8424886fd3cf58548edcddee868ae4e646.
This reverts commit 03271bf7f831f8f432ae572a7ebe1249fd74d79d.
This reverts commit 149647a4b324bfb490a07e22949b147b3dbbb4f5.