Add missing dependencies

Author: bgruening

hicbrowser/client/package.json

@@ -36,6 +36,8 @@
     "feature-viewer": "^0.1.44",
     "grunt-contrib-watch": "^1.0.0",
     "grunt-processhtml": "^0.3.13",
-    "jquery": "^2.2.2"
+    "jquery": "^2.2.2",
+    "underscore": "^1.8.3",
+    "handlebars": "^4.0.6"
   }
 }