Live update of descendants, mapped, excluded while editing

[Sigfried]

Sub-tasks

• [ ] 1. UI updates
• [ ] 2. Algorithmic updates

Sub-task details

1. UI updates

Should start from expression items, and show included, mapped, excluded from there. For each set of concepts related to an expression item:

• Sort by: 1) no flags, 2) includeDescendants, 3) includeMapped, 3a) include Descendants of Mapped (both flags), 4) isExcluded: show in red or something, same order as includes, also mark any included concepts above as excluded.
• Grouping: Visually group the concepts together, e.g. by (a) different background colors for groups of rows, like a set of rows with white background, then a set with light grey background, repeating (example), or (b) different line styles/colors on the left border of the table, like a thick line for one group, thin line for the next, repeating.

2. REST endpoints for descendants, mapped (exclude?)

[joeflack4]

I prefer dark grey over dark red for excluded. Or maybe this kinda red/pink like from bootstrap:

@Sigfried I updated your OP and the title based on my understanding and my suggestions.