Allow filtering of tasks by status

CHANGES.md

src/digi_edit/static/app.js

src/digi_edit/static/app.js.map

src/digi_edit/static/chunk-vendors.js

src/digi_edit/static/chunk-vendors.js.map

src/digi_edit/static/theme.css

src/frontend/src/views/EditionOverview.vue

src/theme/_flex.scss

src/theme/_generic.scss