"Current options" could show just controls-generated options

Feature idea:
Expand the "Current options" field with an option (a toggle?) to show just the controls config, instead of the whole chart/instance config.

Rationale:
I used similar config generators for many CSS styling cases. The most popular one for me was for borders and I always appreciated when I could copy just the part I was dealing with, without a risk that something else can break. Similar [here](https://jsfiddle.net/gh/get/library/pure/highcharts/highcharts/tree/master/samples/stock/xaxis/reversed/): when I deal with `xAxis.reversed`, I don't want to search for the right config option, and the whole config is overwhelming.

I still like the whole config idea, because if that's the starting point for me, then I need the whole config.