For each node in the Tree:

• Rename
• Download
• Duplicate
• Delete

Follow exactly this pattern: http://demo.openmole.org/app (on the left panel, most right icon glyphicon-cog, click on it, then on the pen to rename it.)

Only one thing change: hover on the node and the icon appears (in order to light the Tree).

When you click on the "rename" button to execute the action of renaming it: add a loader as there on gitlab when you edit this issue for instance and click on "save changes": transition is smoother and let the user to understand what is happening.