Removing claim from jedi-logo

I changed the logo and removed the claim-sentance. Unfortunately I wasn't able to test the result. make html fails with:

````
PicklingError: Can't pickle <class 'jedi._compatibility.HackClass'>: attribute lookup jedi._compatibility.HackClass failed
````

It works on master but not on dev. I also tried linux and mac to see if it is a local problem.

I also uploaded the source to a dropbox account that is meant to exist forever (or at least as long as dropbox exists). I could also add the file it is 7MB. Let me know...