don't use atlas for menu selected challenge image because pagination...perhaps can use for dialog image

src/components/menu-selected-challenge-image.js

@@ -1,27 +1,13 @@
-/**
- * Reuse images from the search result.
- */
 AFRAME.registerComponent('menu-selected-challenge-image', {
-  dependencies: ['geometry', 'material'],
-
   schema: {
-    selectedChallengeIndex: {type: 'number'}
-  },
-
-  init: function () {
-    const el = this.el;
-    this.searchThumbnails = document.getElementById('searchThumbnailImages');
-    el.getObject3D('mesh').material.map = this.searchThumbnails.getObject3D('mesh').material.map;
-    el.getObject3D('mesh').material.needsUpdate = true;
+    selectedChallengeId: {type: 'string'}
   },
 
   update: function () {
-    const data = this.data;
     const el = this.el;
-
-    if (data.selectedChallengeIndex === -1 || data.selectedChallengeIndex === '') { return; }
-
-    // Update UVs.
-    el.setAttribute('atlas-uvs', 'row', data.selectedChallengeIndex + 1);
+    if (!this.data.selectedChallengeId) { return; }
+    el.setAttribute(
+      'material', 'src',
+      `https://s3-us-west-2.amazonaws.com/supersaber/${this.data.selectedChallengeId}-image.jpg`);
   }
 });