More sophisticated displaying of variable values in the Insight feature

**Is your feature request related to a problem? Please describe.**
In the Insight feature, when you hover over a variable, you get a popup showing it's value. When this is a literal value, or a simple expression, this is very useful, but when it's something like a big record or decision table it's not. It partially or completely blocks the insight behind it, and it doesn't always fit on the screen, so it's hard to understand.

**Describe the solution you'd like**
A heuristic should be implemented to decide if it makes sense to display a value as a popup, or not. If the value is complicated expression, a record with big field, or a big decision table, it should not be shown as a popup.
Instead, those values should be displayed similar to the Drilldown, where the user needs to specifically click an open button to display the value, and it's integrated into to underlying Insight visualization, instead of overlayed on top of it