Linked flag changing now always updates all networks (which is not very
hard on the performance), special treatment for neutral network will be
removed with the next commit.
Objects that prevent interaction just in some situations (hostility, dead Clonks, ..) should always be shown in the interaction menu (because otherwise players might suspect bugs) and TELL the player WHY they want no interaction.
For that, they might need to specify own error messages.
Known issues:
* The "OnOpen" callback is done even if interaction is disallowed, however just simply removing the callback might not be sufficient, because we might get a callback disbalance if objects change their attitude while the menu is opened and the menu is closed again.
* Some objects (which should) do not include the Library_Ownable. However, we have no base melees atm and since this might introduce new errors, postpone it to 8.0.