Seamless integration of clipboard contents.

Currently there's no automatic integration between the clipboards of the involved machines, if one wants to send the contents of the admin to the host has to press the button and vice versa. It could be interesting if clipboard contents were seamlessly sent or received based on a setting.

For example, one way synchronization where the contents of the admin could be sent to the host whenever they change (or the other way around); or two way, where the valid contents would be the last copied by either machine.