Remove grid classes from parts form
Remove grid classes from parts form

* `col-md-12` is unnecessary as form inputs expand to their full width
in bootstrap 3

telekomatrix/publisher,telekomatrix/publisher,leftees/publisher,alphagov/publisher,leftees/publisher,telekomatrix/publisher,leftees/publisher,telekomatrix/publisher,leftees/publisher,alphagov/publisher,alphagov/publisher