Improve error message when user encounters a table/column schema error

Summary: These are because they forgot to upgrade_schema.php like 99% of the time.

Test Plan: Hit such an error, got a better error message than before.

Reviewers: btrahan, jungejason

Reviewed By: jungejason

CC: aran, epriestley

Differential Revision: https://secure.phabricator.com/D1786