As a user, I want to modify the name of a page version

As a user, I want to modify the name of a page version

• Hover on a version and click "edit" (CMS-14640)
• Modify version name in "Version name" field
• Click "OK" to save, or "Cancel" to return back to the previous screen
• Display a snack bar, Version name modified when the operation is successful.

Authors can edit versions names (but can't schedule)