add commit hash to help page

src/views/HelpView.vue

@@ -214,9 +214,7 @@
       </p>
 
       <h2 class="text-xl font-semibold">What app version is this?</h2>
-      <p>
-        {{ package.version }}
-      </p>
+      <p>{{ package.version }} ({{ commitHash }})</p>
 
       <h2 class="text-xl font-semibold">
         For any other questions, including removing your data:
@@ -246,6 +244,7 @@ export default class Help extends Vue {
   $notify!: (notification: Notification, timeout?: number) => void;
 
   package = Package;
+  commitHash = process.env.VUE_APP_GIT_HASH;
 
   showOnboardInfo() {
     this.$notify(