network.cookie.thirdparty.sessionOnly and other new cookie settings

[allo-]

network.cookie.thirdparty.sessionOnly looks interesting and I think it is not covered by the other options.
http://kb.mozillazine.org/Network.cookie.thirdparty.sessionOnly

Also some of the new settings exposed by Firefox UI (e.g. isolating third-party cookies) may not be covered by the current options in the generator.

There are many combinations of the different cookie settings and many of them could be useful. Providing them as bool settings is probably not useful as it is way too much to think about. We should find out if there are more useful combinations for a dropdown with useful options for normal, secure and insecure-but-convenient settings.