Improved error message on failed import

frontend/src/mixins/importExport.js

@@ -18,6 +18,12 @@ export const importExportMixin = {
         } else {
           bus.$emit('notification', { msg: resp.data.message, type: 'error' })
         }
+      }).catch(error => {
+        console.error(error)
+        bus.$emit('notification', {
+          msg: this.$gettext('CSV seems to be badly formatted'),
+          type: 'error'
+        })
       })
     }
   }

frontend/src/views/identities/Identities.vue

@@ -67,7 +67,7 @@
       <template v-slot:help>
         <ul>
           <li><em>account; loginname; password; first name; last name; enabled; group; address; quota; [, domain, ...]</em></li>
-          <li><em>alias; address; enabled; recipient; recipient; ...</em></li>
+          <li><em>alias; address; enabled; recipient; [more recipients; ...]</em></li>
         </ul>
       </template>
       <template v-slot:extraFields="{ form }">