Upgrade to Rails 3.2.13.
Remove old attr_accessible_if plugin.
Remove caching from friendship requests.
Remove unneeded Paperclip patches.
Expose email_changed? column as a method.

AR's dirty tracking was overriding our attribute with the same name.
Don't assign an object to a _id attribute.

This no longer works in Rails 3.2? Weird.
Include photo_updated_at in selected columns to make Paperclip happy.
Remove the broken import test -- gonna remove the CSV import anyway.
Make Person#description accessible.