fix dnd export + summary sheet + var lang

.../app/administration/list/list-administration.component.ts

src/frontend/app/list/filters/filters-tool.component.ts

...ontend/app/list/summarySheet/summary-sheet.component.html

...ontend/app/list/summarySheet/summary-sheet.component.scss

...frontend/app/list/summarySheet/summary-sheet.component.ts

src/frontend/lang/lang-en.ts

src/frontend/lang/lang-fr.ts

src/frontend/lang/lang-nl.ts