load action_view for tests if we're on rails 4.1.
load action_view for tests if we're on rails 4.1.

petergoldstein/awesome_nested_set,experteer/awesome_nested_set,sximba/rational_nested_set,oesgalha/awesome_nested_set,rbo7nik/awesome_nested_set,markmercedes/awesome_nested_set,collectiveidea/awesome_nested_set,sximba/rational_nested_set,tcjuan/awesome_nested_set