chore(webpack): make css imports absolute

app.config.react.js

src/components/Action/actionBegin.scss

src/components/Action/actionDone.scss

src/components/Action/actionList.scss

src/components/Action/actionModal.scss

src/components/Action/actionOnGoing.scss

src/components/Analysis/analysisView.scss

src/components/Analysis/monthlyanalysis.scss

src/components/Challenge/challengeCard.scss

src/components/Challenge/challengeCardDone.scss

src/components/Challenge/challengeCardLast.scss

src/components/Challenge/challengeCardLocked.scss

src/components/Challenge/challengeCardOnGoing.scss

src/components/Challenge/challengeCardUnlocked.scss

src/components/Challenge/challengeNoFluidModal.scss

src/components/Challenge/challengeView.scss

src/components/Connection/deleteGRDFAccountModal.scss

src/components/Connection/expiredConsentModal.scss

src/components/CustomPopup/customPopupModal.scss

src/components/DateNavigator/datenavigator.scss