Revert "Fix the mkenv script. Start compressing the main scripts on the site."

This reverts commit a363c225ca4d6fb4c81353fe7d639803d4d4fcf1.
Revert "Start using django-pipeline for compressing all JS and CSS with yuglify."

This reverts commit c7e0e04cfb18e44be1a583f3ba4feabed956fff4.
Back to the Future.