Display lesson number when editing lesson

I often preview a course and use the search feature to find text content. For example to find a typo or something to find and replace. 

I enter a search term, click an item in the list below and it displays a lesson. I then need to edit that item but its not always easy to find in large courses.

To help, in edit mode only can each lesson be numbered in the main list and at the top when editing.

In list view: Section X
                    1. XYZ lesson title 1
                    2. XYZ lesson title 2...

When editing: Lesson 5 of 16 at top