Fixed copy to clipboard

fixes #137

frontend/src/components/submission_notes/toolbars/AnnotatedSubmissionTopToolbar.vue

@@ -28,6 +28,7 @@
 import CorrectionHelpCard from '@/components/submission_notes/CorrectionHelpCard'
 import { mapState } from 'vuex'
 import ToggleFeedbackVisibilityButton from '@/components/submission_notes/toolbars/ToggleFeedbackVisibilityButton'
+import { SubmissionNotes } from '@/store/modules/submission-notes';
 
 export default {
   components: {
@@ -40,15 +41,9 @@ export default {
       copyMessage: 'Copy to clipboard'
     }
   },
-  computed: {
-    ...mapState({
-      submission: state => state.submissionNotes.submission.text,
-      showFeedback: state => state.submissionNotes.ui.showFeedback
-    })
-  },
   methods: {
     copyToClipboard () {
-      this.$clipboard(this.submission)
+      this.$clipboard(SubmissionNotes.state.submission.text)
       this.copyMessage = 'Copied!'
       setTimeout(() => {
         this.copyMessage = 'Copy to clipboard'