Added missing mocks in fundraising tests.
Added missing mocks in fundraising tests.

Django 1.9 gives "ValueError: Failed to insert expression"
without these fixes.

xavierdutreilh/djangoproject.com,django/djangoproject.com,django/djangoproject.com,nanuxbe/django,vxvinh1511/djangoproject.com,nanuxbe/django,django/djangoproject.com,vxvinh1511/djangoproject.com,nanuxbe/django,vxvinh1511/djangoproject.com,vxvinh1511/djangoproject.com,xavierdutreilh/djangoproject.com,xavierdutreilh/djangoproject.com,django/djangoproject.com,django/djangoproject.com,nanuxbe/django,xavierdutreilh/djangoproject.com,django/djangoproject.com