Show crucial error messages regardless of FC visibility rules

[jrotering]

jrotering created Redmine issue ID 9248

FC rules allow fields like pagetitle and alias to be hidden. But if they are hidden, associated error messages are also hidden. If it is a critical error that prevents the user from saving the resource (like, for example, a duplicate alias), the net effect is a resource that won't save and doesn't tell you why - not on the screen, not in the error log, or in any server error logs.

Not sure of the best way to remedy this.
Maybe a separate visibility toggle for errors? (Hide field X, but show me any associated errors). Or a div that collects/displays all errors in the form?