Separate stored scales for diffed properties

[EdmundStephens]

[v2021.10.2] The dynamic array data difference view is very useful, but at the moment a single min/max limits and colour legend is associated with the main property and the same property when via Difference Case or Base Time Step. What is very useful is to view e.g. PRESSURE on a normal scale (e.g. 0 to 2000, 'Full color Blue on Top'), but when viewed as a difference to use a scale including negative and positive values, and with 4D seismic-like colours (e.g. -500 to 500, 'Red, white, blue'). The suggestion is for the interface to store min/max and colour legend selections as separate attributes for i) the dynamic property and ii) deltas of the property.