Update popup: Show Cue List Label

When working with multiple cue lists, knowing the label of the cue list becomes much more useful than the number of the list.

Here is an example of what I'm after:

Given the following setup:

Cue lists: 

11 - Car

12 - Truck

13 - Spaceship

Each contain cues:

1 - Low

2 - Medium

3 - High

Target | Label              | Channels

  11/1 | Car / Low          | 21 26 35
  12/3 | Truck / High       | 57 86 99
  13/2 | Spaceship / Medium | 5 7 9 13