Allow editing of promo attributes in list view
Allow editing of promo attributes in list view

This will make it a bit simpler to change promos from live,
or set larger/smaller impressions on them.

davidfischer/readthedocs.org,safwanrahman/readthedocs.org,davidfischer/readthedocs.org,tddv/readthedocs.org,davidfischer/readthedocs.org,pombredanne/readthedocs.org,rtfd/readthedocs.org,pombredanne/readthedocs.org,safwanrahman/readthedocs.org,rtfd/readthedocs.org,tddv/readthedocs.org,safwanrahman/readthedocs.org,safwanrahman/readthedocs.org,pombredanne/readthedocs.org,davidfischer/readthedocs.org,tddv/readthedocs.org,rtfd/readthedocs.org,rtfd/readthedocs.org