Display arrays properly in the results

It is better to see something representing the array than nothing at all.

In the Browser or Search Query tabs, complex types from the JSON such as arrays are not rendered at all in the result table.

When the code detects arrays, the easiest way is to concatenate all the values as a coma-separated list and render this as a string. More elegant is to create a cell per element and span all the element cells them over a bigger cell representing the whole array.