/projects/+review-licenses OOPSes with subscription date

[Brad Crittenden]

Searching for projects with subscriptions causes an OOPS due to the date format.

https://edge.launchpad.net/projects/+review-licenses?field.search_text=&field.active=True&field.active-empty-marker=1&field.license_reviewed-empty-marker=1&field.license_approved-empty-marker=1&field.license_info_is_empty-empty-marker=1&field.licenses-empty-marker=1&field.has_zero_licenses=&field.has_zero_licenses-empty-marker=1&field.created_after=&field.subscription_expires_after=2008-04-01&field.subscription_modified_after=&field.created_before=&field.subscription_expires_before=2109-07-01&field.subscription_modified_before=&search=Search

See OOPS-1284EB132 TypeError: Expected datetime, found datetime.date(2008, 4, 1)

[Brad Crittenden (bac)]

r9479