Nerf test class to fix fatal error.
Update fixtures with the UpgradeShell.
Mark tests incomplete that fatally error due to models.

While fixtures are fixed, models are not. Tests using them continue to
fail.
Fix mistake with fixture properties
Remove Sanitize::escape()

It is in the entirely wrong place and just a a bad idea.
Merge pull request #1314 from markstory/3.0-fixture-migrate

3.0 fixture migrate