Improvements for Well Completions component settings

[jorgenherje]

Suggestions for improving user experience for component:

• Make Sort/Group by Attributes-button more visible. As of now it is not visible as a button, appears like pure text in menu item.
  

• Make activation of sorting more intuitive. As of now, on has to push +-button before the filtering is active. In the picture below, the filter of descending order is not active - which can be confusing. Hard to understand which filter is active and not when configuring. Consider adding button "Add" which adds a configurable filter, and all filters in list are configurable?