New protocol for creating posts in Scripting2

  At least a couple of the first round of users have had a problem with duplicate posts.
  Not sure what's happening on their end, of course this never happens on my machine.
  Likely the usual thing -- I know too much to find the bug on my own. The I Know What Not To Do syndrome. That's why we like having testers who don't mind finding these early bugs.
  With the new code implemented on the server, I was able to save this newly created post, and the token correctly was consumed. Now the question is -- will it prevent an invalid post from being saved. Let's see.