Split configs, remove 'num', add WTI support.

Changes:

* Remove the whole 'num + 1', 'num - 1'
* Remove bar.{__getitem__,__len__,__iter__}
* Most files are now pep8
* Add <BARNAME>/<SOCKETNAME>
* Remove <BARNUMBER>/<SOCKETNUMBER>
* Remove <BARNAME>/<SOCKETNUMBER>
* Update template appropriately
* Add initial code for the hardware ; 'spacebar.py'