Search multiple => done

...search-multiple/components/result/overview.component.html

...e/search-multiple/components/result/overview.component.ts

...multiple/containers/abstract-search-multiple.component.ts

...stance/search-multiple/containers/position.component.html

...search-multiple/containers/result-multiple.component.html

...e/search-multiple/containers/result-multiple.component.ts

...src/app/instance/store/actions/search-multiple.actions.ts

...src/app/instance/store/effects/search-multiple.effects.ts

...rc/app/instance/store/reducers/search-multiple.reducer.ts

client/src/app/metamodel/selectors/dataset.selector.ts