[Enhancement] Add a temporary image for channel if no image available (#231)

app/javascript/dashboard/routes/dashboard/settings/inbox/Index.vue

@@ -18,10 +18,17 @@
             <tr v-for="item in inboxesList" :key="item.id">
               <td>
                 <img
+                  v-if="item.avatarUrl"
                   class="woot-thumbnail"
                   :src="item.avatarUrl"
                   alt="No Page Image"
                 />
+                <img
+                  v-else
+                  class="woot-thumbnail"
+                  src="~dashboard/assets/images/flag.svg"
+                  alt="No Page Image"
+                />
               </td>
               <!-- Short Code  -->
               <td>