Upgrade to Ruby 2.1.0
Downgrade origin of the 11 Chapter to Rails 3.2
Replace URI with URL across the 11 Chapter
Upgrade origin of the 11 Chapter to Rails 4.0
Done with 10 Chapter translation  (Rails 4.0)
Translate contents of the 11 Chapter (Rails 4.0)
Move 11 Chapter _fragments into appropriate '4_0' folders