Migrates jquery-ui to npm package

jquery-ui has been updated in the regristry to point to npm:jquery-ui
instead of github:components/jqueryui.

Further, package-overrides that pointed at the github:components version
of both jquery-ui and jquery have been updated to rely on the npm version
of the package.

Fixes #1008

package-overrides/github/fronteed/iCheck@1.0.2.json

@@ -4,7 +4,7 @@
   "format": "global",
   "files":["icheck.js","icheck.min.js","skins/**/*"],
   "dependencies": {
-    "jquery": "github:components/jquery"
+    "jquery": "npm:jquery"
   },
   "shim":{
     "icheck": ["jquery"],