Speed up build (#1852)

* single build webpack

* fix demo shell test

demo-shell-ng2/config/karma.conf.js

@@ -1,37 +1,71 @@
 var webpackConfig = require('./webpack.test');
 
 module.exports = function (config) {
-  var _config = {
-    basePath: '',
+    var _config = {
+        basePath: '',
 
-    frameworks: ['jasmine'],
+        frameworks: ['jasmine'],
 
-    files: [
-      { pattern: './config/karma-test-shim.js', watched: false }
-    ],
+        files: [
+            { pattern: './config/karma-test-shim.js', watched: false }
+        ],
 
-    preprocessors: {
-      './config/karma-test-shim.js': ['webpack', 'sourcemap']
-    },
+        preprocessors: {
+            './config/karma-test-shim.js': ['webpack', 'sourcemap']
+        },
 
-    webpack: webpackConfig,
+        webpack: webpackConfig,
 
-    webpackMiddleware: {
-      stats: 'errors-only'
-    },
+        webpackMiddleware: {
+            stats: 'errors-only'
+        },
 
-    webpackServer: {
-      noInfo: true
-    },
+        port: 9876,
 
-    reporters: ['mocha'],
-    port: 9876,
-    colors: true,
-    logLevel: config.LOG_INFO,
-    autoWatch: false,
-    browsers: ['Chrome'],
-    singleRun: true
-  };
+        // level of logging
+        // possible values: config.LOG_DISABLE || config.LOG_ERROR || config.LOG_WARN || config.LOG_INFO || config.LOG_DEBUG
+        logLevel: config.LOG_INFO,
 
-  config.set(_config);
+        colors: true,
+
+        autoWatch: true,
+
+        captureTimeout: 180000,
+        browserDisconnectTimeout: 180000,
+        browserDisconnectTolerance: 3,
+        browserNoActivityTimeout: 300000,
+
+        browsers: ['Chrome'],
+
+        customLaunchers: {
+            Chrome_travis_ci: {
+                base: 'Chrome',
+                flags: ['--no-sandbox']
+            }
+        },
+
+        // Karma plugins loaded
+        plugins: [
+            require('../node_modules/karma-jasmine'),
+            require('../node_modules/karma-coverage'),
+            require('../node_modules/karma-sourcemap-loader'),
+            require('../node_modules/karma-chrome-launcher'),
+            require('../node_modules/karma-mocha-reporter'),
+            require('../node_modules/karma-webpack'),
+            require('../node_modules/karma-jasmine-html-reporter')
+        ],
+
+        webpackServer: {
+            noInfo: true
+        },
+
+        reporters: ['mocha']
+
+    };
+
+    if (process.env.TRAVIS) {
+        config.browsers = ['Chrome_travis_ci'];
+    }
+
+    config.set(_config);
 };