Refactor property view #56
Description
The "property view" is used by both the "contxt" and the "eval" however it's not really as the code is duplicated, the new property view/widget should:
- Allow the expansion/collapsing of properties
- Be reusable in both contexts
- Not have such hacky code to decide if lines should be rendered in the viewport or not (hopefully improving performance)
This should also enable the default context depth to be reduced