tested shared Vuex store, created d8 userblock, enabled JSONAPI module

web/themes/custom/materiotheme/vuejs/components/Content/Test.vue

@@ -0,0 +1,22 @@
+<template lang="html">
+  <div id="block-pagetitle" class="">
+    <h1>Test Shared Store ( logged in: {{ isloggedin }} )</h1>
+    <h2 v-if="isloggedin">Shared store is working</h2>
+  </div>
+</template>
+
+<script>
+import { mapState, mapActions } from 'vuex'
+
+export default {
+  computed: {
+    ...mapState({
+      token: state => state.User.token,
+      isloggedin: state => state.User.isloggedin
+    })
+  }
+}
+</script>
+
+<style lang="scss" scoped>
+</style>