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 also 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, but it runs ok locally using appium) to start with a clean build. 
Might be a problem only on my side, but to make `grunt test:remote` run I had to do switch back to manual sauce connect:
- Put back `useSauceConnect` while setting it to false (BTW, @sbrunot, why did you remove this capability setting ? is it harmful with intern 2.x?).
- Download and launch the latest sauce connect version (4.3 / win32) before `grunt test:remote`.