Fix demo pages

frontend/layouts/demo.vue

@@ -12,6 +12,5 @@ export default {
   components: {
     TheHeader
   },
-  middleware: ['check-auth']
 }
 </script>

frontend/pages/demo/image-classification/index.vue

@@ -65,7 +65,7 @@ export default {
       singleLabel: true,
       currentDoc: {
         id: 8,
-        filename: '~/assets/6737785.png',
+        filename: require('~/assets/6737785.png'),
         annotations: [
           {
             id: 17,

frontend/pages/demo/sentiment-analysis/index.vue

@@ -8,7 +8,7 @@
               <label-group
                 :labels="items"
                 :annotations="currentDoc.annotations"
-                single-label="true"
+                :single-label="singleLabel"
                 @add="addLabel"
                 @remove="removeLabel"
               />
@@ -41,6 +41,7 @@ export default {
 
   data() {
     return {
+      singleLabel: true,
       items: [
         {
           id: 4,