remove aria label

src/components/ArticleFooter.vue

@@ -33,7 +33,7 @@
         <v-card>
           <v-toolbar elevation="0">
             <v-toolbar-title>Sitere artikkelen</v-toolbar-title>
-            <v-spacer></v-spacer><v-toolbar-items><v-btn :aria-label="$t('cancel')" @click="close_citation_dialog" text>{{$t('close')}}<v-icon right>close</v-icon></v-btn></v-toolbar-items></v-toolbar>
+            <v-spacer></v-spacer><v-toolbar-items><v-btn @click="close_citation_dialog" text>{{$t('close')}}<v-icon right>close</v-icon></v-btn></v-toolbar-items></v-toolbar>
           <v-card-text class="text--primary">
           {{$t("article.cite_description[0]", content_locale)}}<em>{{$t('dicts.'+$parent.dictionary)}}</em>{{$t("article.cite_description[1]", content_locale)}}
           <br/>