New todos blank state

## What does this MR do?

Updates the blank state on todos.

### Blank state when user has previously had todos

![Screen_Shot_2016-10-12_at_12.40.35](/uploads/17d9a5a409d12bce73147e3879d9d62d/Screen_Shot_2016-10-12_at_12.40.35.png)

### Fully empty blank state

![Screen_Shot_2016-10-12_at_12.40.40](/uploads/5c0824096ced9f03b3ea5f892b70b08b/Screen_Shot_2016-10-12_at_12.40.40.png)

## What are the relevant issue numbers?

Closes #20833

See merge request !6823