Add edit button back to license key

Some members of the team have mentioned they would like to have the edit button enabled on the license app again. A use case I just ran into is a reseller purchased for a company, and they requested that I change the license info to have the end user's e-mail and name instead of the reseller's.

Is this doable @DouweM?

@ChadMalchow @RichardP @philcamillo @Haydn @ronstroschein @EmilyKyle @sytses