Merged some migrations.

db/migrate/20120101000010_create_ticket.rb

@@ -149,6 +149,7 @@ class CreateTicket < ActiveRecord::Migration
       t.column :references,           :string, limit: 3200,    null: true
       t.column :body,                 :text,   limit: 4.megabytes + 1
       t.column :internal,             :boolean,                   null: false, default: false
+      t.column :preferences,          :text,   limit: 500.kilobytes + 1, null: true
       t.column :updated_by_id,        :integer,                   null: false
       t.column :created_by_id,        :integer,                   null: false
       t.timestamps

db/migrate/20150604215204_add_preferences_to_ticket_articles.rb

@@ -1,5 +0,0 @@
-class AddPreferencesToTicketArticles < ActiveRecord::Migration
-  def change
-    add_column :ticket_articles, :preferences, :text, limit: 500.kilobytes + 1, null: true
-  end
-end

db/seeds.rb

@@ -1780,7 +1780,7 @@ Network::Item::Comment.create(
 )
 
 # install locales and translations
-Locale.create(
+Locale.create_if_not_exists(
   locale: 'en-us',
   alias: 'en',
   name: 'English (United States)',