chore(webpack): make css imports absolute

src/components/Exploration/explorationFinished.scss

src/components/Exploration/explorationOngoing.scss

src/components/FormGlobal/formNavigation.scss

src/components/FormGlobal/formProgress.scss

src/components/Home/ReleaseNotesModal.scss

src/components/PartnerIssue/partnerIssueModal.scss

src/components/ProfileType/profileTypeFinished.scss

src/components/ProfileType/profileTypeForm.scss

src/components/Quiz/quizBegin.scss

src/components/Quiz/quizExplanationModal.scss

src/components/Quiz/quizFinish.scss

src/components/Quiz/quizQuestion.scss

src/components/TimeStepSelector/timeStepSelector.scss

src/styles/base/_layout.scss