sub_organizations: Inicial cucumber tests.

(ActionItem2866)

Signed-off-by: David Carlos <ddavidcarlos1392@gmail.com>
Signed-off-by: Luiz Matos <luizff.matos@gmail.com>
Merge branch 'AI2866-display_full' of github.com:fga-unb/noosfero into AI2866-display_full