JS frontend stuff

Move old ember frontend to properly named folder
Add vue based new frontend

frontend-old-ember/app/components/util/one-of-array.hbs

@@ -0,0 +1,16 @@
+<div class="{{@wrapper-class}}">
+  {{#if @readonly}}
+    <p class="{{@element-classes}}">{{@selected}}</p>
+  {{else}}
+    {{#each @elements as |element index|}}
+      <RadioButton
+        @value="{{element}}"
+        @groupValue={{@selected}}
+        @name={{@name}}
+        @required={{@required}}
+      >
+        {{element}}
+      </RadioButton>
+    {{/each}}
+  {{/if}}
+</div>