Setup Webpack & TypeScript (#316)

* TypeScript and WebPack.

* Minor cleanup.

* Add background.js as entry point to webpack.

* Use downloaded fonts for better performance.
Remove google-fonts-webpack-plugin.

* Add the remaining entry points and setup notification bar.

* Update readme for webpack.

* Convert CipherItems to TypeScript to demonstrate how a component looks in TS.

* Fix edge requirering a custom angular version.

* Rewrite gulp tasks for packaging releases.

* Re-add the webpack gulp plugin.

* Remove unessesary line in analytics.

webpack.prod.js

@@ -0,0 +1,35 @@
+const merge = require('webpack-merge');
+//const UglifyJSPlugin = require('uglifyjs-webpack-plugin');
+const ExtractTextPlugin = require("extract-text-webpack-plugin");
+const common = require('./webpack.common.js');
+
+const extractLess = new ExtractTextPlugin({
+    filename: "popup/css/[name].css",
+    disable: false,
+    allChunks: true
+});
+
+module.exports = merge(common, {
+    devtool: 'source-map',
+    module: {
+        rules: [
+            {
+                test: /\.less$/,
+                use: extractLess.extract({
+                    use: [
+                        {
+                            loader: "css-loader",
+                        },
+                        {
+                            loader: "less-loader",
+                        }
+                    ]
+                })
+            }
+        ]
+    },
+    plugins: [
+        extractLess
+        //new UglifyJSPlugin()
+    ]
+});