New branch for Moodle 2.7.
-Update some files to new Moodle 2.7 APIs
A lot of changes to adapt at the new Moodle 2.7.
-Added new functionality: the possibility to change the name of concat vars (Isn't mandatory).
Another bugs fixed.
Refactoring and some visual change.
Comments has been added and removed some junk codecode
Added new walkthrough_test
Merge pull request #2 from fontinixxl/moodle27

Moodle27