Tracking category for modules saved with errors

When the "Allow saving code with errors" checkbox is used, an
automatically-added tracking category would be useful. And we may as
well also include the error message that would have been displayed when
trying to save without that checkbox checked.

Bug: 39605
Change-Id: Ideb72a58887fb1187b9adba80b7245cdca070ce4
Merge "Tracking category for modules saved with errors"