Replace lockfile with shrinkwrap (#635)

* Replace lockfile with shrinkwrap
* Remove scrollparent

Author: adhityamamallan

package-lock.json npm-shrinkwrap.jsonpackage-lock.json renamed to npm-shrinkwrap.json

@@ -82,7 +82,6 @@
     "openid-client": "^5.6.5",
     "prismjs": "^1.14.0",
     "promise.prototype.finally": "^3.1.0",
-    "scrollparent": "2.0.1",
     "stylus": "^0.54.5",
     "stylus-loader": "^3.0.1",
     "tchannel": "3.10.1",