Software Infrastructure Upgrade

1. Upgrade to ruby-2.0.0-p247.
2. Upgrade to Rails 3.2.13.
3. Upgrade development mode debugging tools.
4. Setup a config/env.sample file.
 updating pandora client version and skipping filter on authenticate user

Resolved Conflicts:
	Gemfile
	Gemfile.lock
 adding accessible attributes
Remove faulty CSS files. Fix pandora login page. Fix Pandora::SongsController crashing on bogus Pandora::Song objects.