Update jquery.jeditable.js

[mkdgs]

let's user defined function (submitdata) accessing and modifying values submitted

after we can doing something like:

 submitdata:  function(value, settings, submitdata) {
              return { socool : submitdata[settings.name] };
 }

[NicolasCARPi]

Hello,

Thank you for your contribution, the code has been merged :)

Cheers,
~Nico