Revert "remove less and less-loader"

This reverts commit d39db511e5.

{{cookiecutter.app_name}}/package.json

@@ -39,6 +39,8 @@
     "extract-text-webpack-plugin": "^2.1.2",
     "file-loader": "^0.11.2",
     "font-awesome-webpack": "0.0.5-beta.2",
+    "less": "^2.7.2",
+    "less-loader": "^4.0.4",
     "manifest-revision-webpack-plugin": "^0.4.0",
     "raw-loader": "^0.5.1",
     "style-loader": "^0.18.2",

{{cookiecutter.app_name}}/webpack.config.js

@@ -41,6 +41,7 @@ module.exports = {
   module: {
     loaders: [
       { test: /\.html$/, loader: 'raw-loader' },
+      { test: /\.less$/, loader: ExtractTextPlugin.extract({fallback: 'style-loader', use: 'css-loader!less-loader' }) },
       { test: /\.css$/, loader: ExtractTextPlugin.extract({fallback: 'style-loader', use: 'css-loader' }) },
       { test: /\.woff(2)?(\?v=[0-9]\.[0-9]\.[0-9])?$/, loader: 'url-loader?limit=10000&mimetype=application/font-woff' },
       { test: /\.(ttf|eot|svg|png|jpe?g|gif|ico)(\?.*)?$/i,