#210860: Don't show the user status toggle when the user does not have permissions (patch by neofpo)

- Added an API for JavaScript callback functions to alter the page when an option is toggled. This can for example add/remove the class 'node-unpublished' to the node container when the node is toggled to instantly visually reflect the state. This is imlemented for both nodes (sticky, published) and comments (published)

#136183: New hook to allow modules to add node and user toggle options (by nedjo) with some cleanups/fixes

Converted toggle callbacks to POST