[galaxy-dev] Display history.id in History Panel

Hi all, In a local instance of Galaxy, I rename all outputs of my users and redirect their in a directory named with their usermail galaxy and then in a directory named with the history.id. To help them to retrieve their datasets, I want to display the history.idat the top of the History left panel, for example near the name of the history. Can you say me which file(s) should I modify and how to display this information ? Thanks a lot. Julie