Fix for fully specified class names in PHP 5.3 that are not properly …

…translated to name of JS validation function.

Example:
$form->addText('sum', 'Sum')->addRule('\Validators\GeneralValidators::Sum',...);

client-side/forms/netteForms.js

@@ -128,6 +128,7 @@ Nette.validateRule = function(elem, op, arg) {
 		op = op.substr(1);
 	}
 	op = op.replace('::', '_');
+  op = op.replace('\\', '');
 	return Nette.validators[op] ? Nette.validators[op](elem, arg, val) : null;
 };