refactor(build): simplify and modularize

simplify:
- use same html file for dart and JS
- build benchmarks automatically when doing `gulp build`
- centralize configuration

modularize:
- move all build tasks into separate node.js modules under
  `tools/build`.

changes:
- the `build` folder is now the `dist` folder

Closes #284

modules/benchmarks_external/src/benchpress.dart

@@ -1,63 +0,0 @@
-library benchmarks.benchpress;
-
-import 'dart:js' as js;
-import 'dart:html';
-import 'dart:async';
-
-// TODO: move the functionality of this module into benchpress and replace this
-// file with a Dart wrapper!
-
-var _benchmarkNames = [];
-
-_benchmarkId(index) {
-  return "benchmark${index}";
-}
-
-_useBenchmark(index) {
-  var search = window.location.search;
-  if (search.length > 0) {
-    search = search.substring(1);
-  }
-  if (search.length > 0) {
-    return search == _benchmarkId(index);
-  } else {
-    return true;
-  }
-}
-
-_onLoad(callback) {
-  var isReady = document.readyState == 'complete';
-  if (isReady) {
-    Timer.run(callback);
-  } else {
-    window.addEventListener('load', (event) => callback(), false);
-  }
-}
-
-_createBenchmarkMenu() {
-  var div = document.createElement('div');
-  div.innerHtml += '<h1>Benchmarks:</h1><a class="btn btn-default" href="?">All</a>';
-  for (var i=0; i<_benchmarkNames.length; i++) {
-    var activeClass = _useBenchmark(i) ? 'active' : '';
-    div.innerHtml += '<a class="btn btn-default ${activeClass}" href="?${_benchmarkId(i)}">${_benchmarkNames[i]}</a>';
-  }
-  document.body.insertBefore(div, document.body.childNodes[0]);
-}
-
-benchmark(name, stepsCreationCallback) {
-  _benchmarkNames.add(name);
-  if (_benchmarkNames.length == 2) {
-    _onLoad(_createBenchmarkMenu);
-  }
-  if (_useBenchmark(_benchmarkNames.length-1)) {
-    stepsCreationCallback();
-  }
-}
-
-benchmarkStep(name, callback) {
-  var benchmarkName = _benchmarkNames[_benchmarkNames.length-1];
-  js.context['benchmarkSteps'].add(new js.JsObject.jsify({
-      "name": benchmarkName + '#' + name,
-      "fn": new js.JsFunction.withThis((_) => callback())
-  }));
-}

modules/benchmarks_external/src/benchpress.es6

@@ -1,55 +0,0 @@
-// TODO: move the functionality of this module into benchpress itself!
-
-var benchmarkNames = [];
-
-function benchmarkId(index) {
-  return 'benchmark' + index;
-}
-
-function useBenchmark(index) {
-  var search = window.location.search;
-  if (search.length > 0) {
-    search = search.substring(1);
-  }
-  if (search.length > 0) {
-    return search == benchmarkId(index);
-  } else {
-    return true;
-  }
-}
-
-function onLoad(callback) {
-  var isReady = document.readyState === 'complete';
-  if (isReady) {
-    window.setTimeout(callback);
-  } else {
-    window.addEventListener('load', callback, false);
-  }
-}
-
-function createBenchmarkMenu() {
-  var div = document.createElement('div');
-  div.innerHTML += '<h1>Benchmarks:</h1><a class="btn btn-default" href="?">All</a>';
-  for (var i=0; i<benchmarkNames.length; i++) {
-    var activeClass = useBenchmark(i) ? 'active' : '';
-    div.innerHTML += ('<a class="btn btn-default '+activeClass+'" href="?'+benchmarkId(i)+'">'+benchmarkNames[i]+'</a>');
-  }
-  document.body.insertBefore(div, document.body.childNodes[0]);
-}
-
-export function benchmark(name, stepsCreationCallback) {
-  benchmarkNames.push(name);
-  if (benchmarkNames.length === 2) {
-    onLoad(createBenchmarkMenu);
-  }
-  if (useBenchmark(benchmarkNames.length-1)) {
-    stepsCreationCallback();
-  }
-}
-
-export function benchmarkStep(name, callback) {
-  var benchmarkName = benchmarkNames[benchmarkNames.length-1];
-  window.benchmarkSteps.push({
-    name: benchmarkName + '#' + name, fn: callback
-  });
-}

modules/benchmarks_external/src/compiler/benchmark.es5

@@ -1,7 +0,0 @@
-Promise.all([
-  System.import('benchmarks_external/compiler/compiler_benchmark_ng13')
-]).then(function (benchmarks) {
-  benchmarks.forEach(function(bm) {
-    bm.main();
-  });
-}, console.log.bind(console));

modules/benchmarks_external/src/compiler/bp.conf.es5

@@ -1,12 +0,0 @@
-module.exports = function(config) {
-  config.set({
-    scripts: [
-      {src: '/js/traceur-runtime.js'},
-      {src: '/js/es6-module-loader-sans-promises.src.js'},
-      {src: '/js/extension-register.js'},
-      {src: 'register_system.js'},
-      {src: 'https://ajax.googleapis.com/ajax/libs/angularjs/1.3.2/angular.js'},
-      {src: 'benchmark.js'}
-    ]
-  });
-};

modules/benchmarks_external/src/compiler/compiler_benchmark_ng10.dart

@@ -1,6 +1,6 @@
 import 'package:angular/angular.dart';
 import 'package:angular/application_factory_static.dart';
-import '../benchpress.dart';
+import 'package:benchpress/benchpress.dart';
 import 'dart:html';
 
 var COUNT = 30;

modules/benchmarks_external/src/compiler/compiler_benchmark_ng13.es6

@@ -1,4 +1,4 @@
-import {benchmark, benchmarkStep} from '../benchpress';
+import {benchmark, benchmarkStep} from 'benchpress/benchpress';
 
 var COUNT = 30;
 var $compile;

modules/benchmarks_external/src/compiler/main.es6

@@ -0,0 +1 @@
+export {main} from './compiler_benchmark_ng13';

modules/benchmarks_external/src/compiler/main.html

@@ -1,3 +1,5 @@
+$SCRIPTS$
+
 <template id="templateNoBindings">
   <div class="class0 class1 class2 class3 class4 " nodir0="" attr0="value0" nodir1="" attr1="value1" nodir2="" attr2="value2" nodir3="" attr3="value3" nodir4="" attr4="value4">
     <div class="class0 class1 class2 class3 class4 " nodir0="" attr0="value0" nodir1="" attr1="value1" nodir2="" attr2="value2" nodir3="" attr3="value3" nodir4="" attr4="value4">

modules/benchmarks_external/src/compiler/register_system.es5

@@ -1,11 +0,0 @@
-System.paths = {
-  'core/*': '/js/core/lib/*.js',
-  'change_detection/*': '/js/change_detection/lib/*.js',
-  'facade/*': '/js/facade/lib/*.js',
-  'di/*': '/js/di/lib/*.js',
-  'rtts_assert/*': '/js/rtts_assert/lib/*.js',
-  'test_lib/*': '/js/test_lib/lib/*.js',
-  'benchmarks_external/*': '/js/benchmarks_external/lib/*.js',
-  'reflection/*': '/js/reflection/lib/*.js'
-};
-register(System);