CLC-2908 Asset compilation fails because of Gemfile.lock updates. Revert "CLC-2905 Updates Rails to 3.2.16, along with many other gems"

This reverts commit 2bea6cd92896302b6edc9b56bb1d81769c004364.
Merge pull request #1873 from ctweney/clc-2905-revert

CLC-2908 Asset compilation fails because of Gemfile.lock updates. Revert...