A bug which we fix here and there by sending the string '0' instead.
We will be able to remove these hacks ("booleanintstring") when the
next release of DB_DataObject comes as I patched it for them.
Nickname verifications on registration and updates for profiles (not yet
groups) have been improved.
Minor bugs in RegisterAction were also fixed, where multiple forms would
be outputed because the function did not return after showForm(). This
will be solved more permanently with throwing exceptions in the future.
lib/plugin.php now has a parent onAutoload function that finds most common
files that are used in plugins (actions, dataobjects, forms, libs etc.) if
they are put in the standardised directories ('actions', 'classes', 'forms',
'lib' and perhaps some others in the future).
