Add JSON tree view lib

package-lock.json

@@ -8011,6 +8011,12 @@
       "integrity": "sha1-Epai1Y/UXxmg9s4B1lcB4sc1tus=",
       "dev": true
     },
+    "json-tree-view": {
+      "version": "0.4.9",
+      "resolved": "https://registry.npmjs.org/json-tree-view/-/json-tree-view-0.4.9.tgz",
+      "integrity": "sha1-JzZZxFlkd/LrG0i/AuISsM5Yx1w=",
+      "dev": true
+    },
     "json3": {
       "version": "3.3.2",
       "resolved": "https://registry.npmjs.org/json3/-/json3-3.3.2.tgz",

package.json

@@ -42,6 +42,7 @@
     "ember-load-initializers": "^1.0.0",
     "ember-resolver": "^4.0.0",
     "ember-source": "~2.16.0",
+    "json-tree-view": "^0.4.9",
     "loader.js": "^4.2.3",
     "remotestorage-widget": "^1.2.0",
     "remotestoragejs": "^1.0.0"