Add option to hide features panel (About page)

src/components/about/about.js

@@ -7,6 +7,9 @@ const About = {
     InstanceSpecificPanel,
     FeaturesPanel,
     TermsOfServicePanel
+  },
+  computed: {
+    showFeaturesPanel () { return this.$store.state.config.showFeaturesPanel }
   }
 }
 

src/components/about/about.vue

@@ -1,7 +1,7 @@
 <template>
   <div class="sidebar">
     <instance-specific-panel></instance-specific-panel>
-    <features-panel></features-panel>
+    <features-panel v-if="showFeaturesPanel"></features-panel>
     <terms-of-service-panel></terms-of-service-panel>
   </div>
 </template>