Setup a redirect from www.
Temporary remove social buttons.
Disable show_origin script for the Help page.
Fix small bug in the sidebar.
Update feedback vidget.
Remove the "Buy Print Edition" button from the sidebar.
Fix several links.
Fix typo.
Upgrade translation of the First Chapter to the latest version of the book (Rails 3.0.12, 1st edition)
Upgrade translation of the 2 Chapter to the latest version of the book (Rails 3.0.12, 1st edition).
Upgrade translation of the 3 Chapter to the latest version of the book (Rails 3.0.12, 1st edition).
Upgrade translation of the 4 Chapter to the latest version of the book (Rails 3.0.12, 1st edition).
Upgrade translation of the 5 Chapter to the latest version of the book (Rails 3.0.12, 1st edition).
Upgrade translation of the 6 Chapter to the latest version of the book (Rails 3.0.12, 1st edition).
Upgrade translation of the 7 Chapter to the latest version of the book (Rails 3.0.12, 1st edition).
Upgrade translation of the 8 Chapter to the latest version of the book (Rails 3.0.12, 1st edition).
Upgrade translation of the 9 Chapter to the latest version of the book (Rails 3.0.12, 1st edition).
Upgrade translation of the 10 Chapter to the latest version of the book (Rails 3.0.12, 1st edition).
Upgrade translation of the 11 Chapter to the latest version of the book (Rails 3.0.12, 1st edition).
Upgrade translation of the 12 Chapter to the latest version of the book (Rails 3.0.12, 1st edition).