Merge branch 'develop' into 820_integrate_kpi

docs/develop/setup.md

...s/tabular-parser_3_row_current-entry_to-path.archive.yaml

...abular-parser_5_row_single-new-entry_to-path.archive.yaml

...ar-parser_6_row_multiple-new-entries_to-root.archive.yaml

...ar-parser_7_row_multiple-new-entries_to-path.archive.yaml

...er_8_row_current-entry_to-path_subsubsection.archive.yaml

examples/data/tabular/README.md

examples/data/tabular/data.xlsx

examples/data/tabular/periodic-table.archive.yaml

gui/package.json

gui/src/components/Actions.js

gui/src/components/App.js

gui/src/components/Help.js

gui/src/components/Quantity.js

gui/src/components/UnitSelector.js

gui/src/components/archive/ArchiveBrowser.js

gui/src/components/archive/Overview.js

gui/src/components/archive/PlotlyFigure.js

gui/src/components/archive/XYPlot.js

gui/src/components/buttons/DownloadSystemButton.js