Expire the spartacus build id in ten years (bug 1014564)

Set the spartacus build id to time.time() if it isn't set.
Close #492
Remove cache timeout in webpay.base.test_utils
Add attrs required for wait (bug 1024451)
Merge pull request #491 from muffinresearch/add-more-attrs

Add attrs required for wait (bug 1024451)