Fix db migrations and schema to match reality.

It's still not clear where the users table came from, as there's no migration
creating it, but at least contacts now match the expected schema as expected
by the models.

db/migrate/20110920102715_create_artefacts.rb

@@ -1,4 +1,7 @@
 class CreateArtefacts < ActiveRecord::Migration
+  class Audience < ActiveRecord::Base
+  end
+
   def up
     create_table :related_items do |t|
       t.integer :source_artefact_id, :null => false

db/schema.rb

@@ -52,23 +52,13 @@
   end
 
   create_table "contacts", :force => true do |t|
-    t.string   "name",            :null => false
-    t.datetime "created_at"
-    t.datetime "updated_at"
-    t.text     "postal_address"
-    t.string   "email_address"
-    t.string   "website_url"
-    t.text     "opening_hours"
-    t.integer  "contactotron_id", :null => false
-  end
-
-  create_table "phone_numbers", :force => true do |t|
-    t.integer  "contact_id", :null => false
-    t.string   "kind",       :null => false
-    t.string   "label"
-    t.string   "value",      :null => false
-    t.datetime "created_at"
-    t.datetime "updated_at"
+    t.string  "name",            :null => false
+    t.text    "postal_address"
+    t.string  "email_address"
+    t.string  "website_url"
+    t.text    "opening_hours"
+    t.text    "phone_numbers"
+    t.integer "contactotron_id", :null => false
   end
 
   create_table "related_items", :force => true do |t|