Upgrade to Ruby 2.0
Upgrade sass-rails to 3.1.7 to fix precompile err

Running `rake assets:precompile` was not working, erroring out with
mysterious error. Upgrading sass-rails fixes it
Upgrade to Rails 3.2
Quiet assets (using gem)

Old solution that worked for Rails 3.1 doesn’t work anymore; now there
is a gem for this.
Fix deprecation warning re partial_path
Remove obsolete vendor/plugins