Indicate pre-selected multi-value item

Issue #32 

Last selected item has a checkmark next to it and when a new item is selected the background goes gray. Once the user goes back to the home tableview of the debug menu the checkmark will update to the new selection and will display accordingly the next time they open the multi-value item tableview
Hey @ndonald2. I was just wondering about an instance where the selections won't line up with the row indexes since we put them in the table view in order and the MultiValue item has the parallel arrays in it so we always know the values will map one-to-one with the indexes in the second array