Improve design of next button for absence creation form

aleksis/apps/alsijil/frontend/components/coursebook/absences/AbsenceCreationDialog.vue

@@ -53,11 +53,13 @@
       <!-- primary -->
       <save-button
         v-if="form"
-        i18n-key="actions.continue"
         @click="form = false"
         :loading="loading"
         :disabled="!formValid"
-      />
+      >
+        {{ $t("actions.continue") }}
+        <v-icon right>$next</v-icon>
+      </save-button>
       <save-button
         v-else
         i18n-key="actions.confirm"