Add instance information page for mobile

src/components/about/about.js

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+import InstanceSpecificPanel from '../instance_specific_panel/instance_specific_panel.vue'
+import FeaturesPanel from '../features_panel/features_panel.vue'
+import TermsOfServicePanel from '../terms_of_service_panel/terms_of_service_panel.vue'
+
+const About = {
+  components: {
+    InstanceSpecificPanel,
+    FeaturesPanel,
+    TermsOfServicePanel
+  }
+}
+
+export default About

src/components/about/about.vue

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+<template>
+  <div class="sidebar">
+    <instance-specific-panel></instance-specific-panel>
+    <features-panel></features-panel>
+    <terms-of-service-panel></terms-of-service-panel>
+  </div>
+</template>
+
+<script src="./about.js" ></script>
+
+<style lang="scss">
+</style>