Refactor UI Build System (#3203)

* initial build trial, clean up awx/ui

* fix hardcoded refs to ng-toast, add jshint preloader

* remove browserify test

* update grunt-jshint -> jshint module loader, browser-sync, update dev targets to build-docker-machine & build-docker-cid, fix blocking tasks

* less autoprefixer

* sample build commands

* fix release build

* update README

* karma config stub

* webpack config for karma tests

* karma preview for shane

* fix build-docker-machine target

* karma+webpack test pipeline configuration, stub tests

* fix smart/job status icons classes

* fix jquery + jsyaml shims, fix LESS cascade

* fix angular-codemirror dependency, explicitly import style/mode dependencies

* shim jsonlint

* fix angular-scheduler AMD imports, remove jquuery-ui shim, fix release config

* use closed $.fn.datepicker for system-tracking

* remove packaging/node/

* remove old tests

* shrinkwrap fragile dependency sandcastle, update README, lint

* first pass at fixing rrule shim

* update makefile targets

* update gitignore w/ new flag file

* add saucelabs karma config

* add license controller test

* add examples of service and directive tests

* Makefile flubs

* consolidate clean-ui target, compulsively update flag file location

* dep on CJS/AMD/UMD compatible version of rrule lib, fix example tests/config for demo

* boilerplate karma config for saucelabs (should be abstracted to common config after proven to work)

* update docs

* docs feedback

* update Dockerfile with Node 6.x dep

awx/ui/grunt-tasks/webpack.js

@@ -0,0 +1,5 @@
+var config = require('../webpack.config.js');
+module.exports = {
+    dev: config.dev,
+    prod: config.release
+};