Add batch actions to local user table

- Create TableToolbar component for table batch actions
- Added Toast warning type and toast title message translations
- Update vue-i18n package to latest v8.15.3 to use improved
  pluarlization features

Signed-off-by: Yoshie Muranaka <yoshiemuranaka@gmail.com>
Change-Id: I455beba4f56b8209b1201bbc5ff3f616e960d189
diff --git a/src/store/api.js b/src/store/api.js
index 0f8c948..8fdbdd2 100644
--- a/src/store/api.js
+++ b/src/store/api.js
@@ -40,5 +40,8 @@
   },
   all(promises) {
     return Axios.all(promises);
+  },
+  spread(callback) {
+    return Axios.spread(callback);
   }
 };