Scroll to top of the subscription page when the current assignment changes

frontend/src/pages/SubscriptionWorkPage.vue

@@ -25,7 +25,7 @@
 </template>
 
 <script lang="ts">
-import { Vue, Component} from 'vue-property-decorator'
+import { Vue, Component, Watch } from 'vue-property-decorator'
 import { Route, NavigationGuard } from 'vue-router'
 import SubmissionCorrection from '@/components/submission_notes/SubmissionCorrection.vue'
 import SubmissionType from '@/components/submission_type/SubmissionType.vue'
@@ -109,5 +109,10 @@ export default class SubscriptionWorkPage extends Vue {
       this.$router.replace({name: 'correction-ended'})
     })
   }
+
+  @Watch('currentAssignment')
+  onCurrentAssignmentChanged() {
+    window.scrollTo(0, 0)
+  }
 }
 </script>