FEAT #13271 TIME 0:30 fix import rxjs + fix css

src/frontend/app/about-us.component.ts

src/frontend/app/actions/actions-list.component.ts

src/frontend/app/actions/actions.service.ts

...-circuit-action/continue-avis-circuit-action.component.ts

...ve-parallel-action/give-avis-parallel-action.component.ts

...rallel-send-action/send-avis-parallel-action.component.ts

...alidate-action/validate-avis-parallel-action.component.ts

...rkflow-send-action/send-avis-workflow-action.component.ts

...lose-and-index-action/close-and-index-action.component.ts

.../actions/close-mail-action/close-mail-action.component.ts

.../close-mail-with-attachments-or-notes-action.component.ts

...nd/app/actions/confirm-action/confirm-action.component.ts

...action/create-acknowledgement-receipt-action.component.ts

...ce-action/disabled-basket-persistence-action.component.ts

...nce-action/enabled-basket-persistence-action.component.ts

...eposit-list-action/print-deposit-list-action.component.ts

...red-mail-action/print-registered-mail-action.component.ts

...tions/reconciliation-action/reconcile-action.component.ts

.../app/actions/redirect-action/redirect-action.component.ts

...tity-action/redirect-initiator-entity-action.component.ts