EZ PZ (fixed)

It's now easier to change the list of messages.

Previous format was JSON: for each message, the syntax was:

[
   {
      "title": "title of this message",
      "message":"content of this message"
   },
   {
      "title": "title of this other message",
      "message":"content of this other message"
   },
]

new syntax is still json, but simplified:

[
   ["title", "this is the message"],
   [
      "title of other message", 
      "this is the other message"
   ],
]

Also, "EZ PZ" is broken.
This releases fixes The Big Bug