FEAT #143 fix mat-icon + copy actions for new group + remove stepper

apps/maarch_entreprise/Views/administration.component.html

...iews/basket-administration-groupList-modal.component.html

...rch_entreprise/Views/basket-administration.component.html

...ch_entreprise/Views/baskets-administration.component.html

apps/maarch_entreprise/css/engine.css

...lar/app/administration/basket-administration.component.js

...lar/app/administration/basket-administration.component.ts