Disallow Django 1.9 to fail on Travis
Disallow Django 1.9 to fail on Travis

The tests pass on Django 1.9 now, so let's remove the allowed failures.

jrief/djangocms-cascade,jtiki/djangocms-cascade,jrief/djangocms-cascade,rfleschenberg/djangocms-cascade,rfleschenberg/djangocms-cascade,rfleschenberg/djangocms-cascade,jrief/djangocms-cascade,jtiki/djangocms-cascade,haricot/djangocms-bs4forcascade,haricot/djangocms-bs4forcascade,jtiki/djangocms-cascade