Basic archiving overhaul

db/migrate/20141010085152_add_snapshot_to_domain.rb

@@ -0,0 +1,5 @@
+class AddSnapshotToDomain < ActiveRecord::Migration
+  def change
+    add_column :domain_versions, :snapshot, :text
+  end
+end

db/schema.rb

@@ -11,7 +11,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20141006130306) do
+ActiveRecord::Schema.define(version: 20141010085152) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -143,6 +143,7 @@ ActiveRecord::Schema.define(version: 20141006130306) do
     t.string   "whodunnit"
     t.text     "object"
     t.datetime "created_at"
+    t.text     "snapshot"
   end
 
   add_index "domain_versions", ["item_type", "item_id"], name: "index_domain_versions_on_item_type_and_item_id", using: :btree