Add function to edit xml file
Add breadcrumb
js to display some messages
* Display the breadcrumb
* Use pushState
* Display messages to the user
We need a href on the links for the pushState
Be able to create some files
Be able to edit and update XML files
Add jstree_data when we edit a file to be able to load jstree.
Also add a function to get the element to insert when we click on the
buttons
Use jquery.layout to display the file to edit with the tree.