Fix gemfile and update better errors gem

Rolled it back to commit 44259f6

commit 44259f6
Author: Kim Miller <kimardenmiller@gmail.com>
Date:   Wed Mar 27 13:29:48 2013 -0700

    Modal to Angular.js - Provides a working New Hub Modal with basic saving and error handling. Is missing User Authentication compatibility and Google Auto-complete being recognized due to jquery timing differences.