Pushed all the introduction changes. The vocabulary introduction is working now in the JonatanBranch but needs to be tested to see if it works on this branch.
Revert "Pushed all the introduction changes. The vocabulary introduction is working now in the JonatanBranch but needs to be tested to see if it works on this branch."

This reverts commit 01f32945f1dec29280b2113fc969d29c1404061b.
Merge branch 'IntroductionBranch' of http://github.com/hcilabasu/EMBRACE-iPad into JonatanBranch