Add middleware for auth check

frontend/middleware/auth.js

@@ -0,0 +1,5 @@
+export default function (context) {
+  if (!context.store.getters.auth.isAuthenticated) {
+    context.redirect('auth')
+  }
+}

frontend/middleware/check-auth.js

@@ -0,0 +1,3 @@
+export default function (context) {
+  context.store.dispatch('auth/initAuth', context.req)
+}