#18 Better error handling on form data.

[Terry Mackintosh]

When filling out a form, such as posting an ad, if a mistake is made, the result is a page that says what the mistake was. The only recovery from this is to use the browsers back button, but somethings get lost when that is done... So it would be better to come back to the same form, filled in with what was good, and note the parts that need fixing.