On branch strong-params

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I'll pull to catch up after this commit
Change code to whitelist params
Remove attr_accessible lines
Add strong_params to Gemfile, since this branch is still on Rails 3
Mixin to ActiveRecord::Base ActiveModel::ForbiddenAttributesProtection
Use an initializer for the mixin

app/models/work_info.rb

@@ -1,5 +1,4 @@
 class WorkInfo < ActiveRecord::Base
-  attr_accessible :DoB, :SSN, :bonuses, :income, :years_worked
   belongs_to :user
   has_one :key_management, :foreign_key => :user_id, :primary_key => :user_id, :dependent => :destroy
   #before_save :encrypt_ssn