display users in stacked avatarlist

src/components/avatar_list/avatar_list.js

@@ -0,0 +1,15 @@
+import UserAvatar from '../user_avatar/user_avatar.vue'
+
+const AvatarList = {
+  props: ['avatars'],
+  computed: {
+    slicedAvatars () {
+      return this.avatars ? this.avatars.slice(0, 9) : []
+    }
+  },
+  components: {
+    UserAvatar
+  }
+}
+
+export default AvatarList