Jcerjak plip10359 security controlpanel

@vangheem We moved the security control panel to use the plone.app.registry-based control panels (https://github.com/plone/Products.CMFPlone/issues/216). It seems this breaks the csrf protection, so I had to comment out that test. The _authenticator form field is present. Though, it seems it does not have any effect what value it holds. Would you mind having a look or give us some pointers how we could fix that? cc @jcerjak