nette/nette — pull request #966 by HosipLan (2013-02-13 16:31:50+00:00)
Title: Forms: allow adding errors in onValidate event

When you add errors in `Container::$onValidate` to concrete control, they are cleared by rules validation in next step. By inverting the order, message from `onValidate` will be appended and preserved.

context: http://forum.nette.org/cs/13619-callback-na-validaciu-vs-validacne-pravidla#p97290