Migrate tests to Intern 2.0.1

Migration of all deliteful automated tests to intern 2.0.1

After the migration, there is one remaining issue: the functional test `deliteful/Select - functional - keyboard navigation selectionMode = single` is now failing on chrome 36.

I haven't been able to run the test suite on sauce lab today, I will try again tomorrow in order to adapt the list of environments if needed (iOS7 on SauceLab not yet supported by Intern) to start with a clean build.