adding webpack configuration to support less

glances/outputs/static/webpack.config.js

@@ -12,6 +12,26 @@ module.exports = {
     devtool: '#source-map',
     module: {
         loaders: [
+            {
+                test: /\.scss$/,
+                use: [{
+                    loader: 'style-loader',
+                }, {
+                    loader: 'css-loader',
+                }, {
+                    loader: 'sass-loader',
+                }]
+            },
+            {
+                test: /\.less$/,
+                use: [{
+                    loader: 'style-loader',
+                }, {
+                    loader: 'css-loader',
+                }, {
+                    loader: 'less-loader',
+                }]
+            },
             {
                 test: /\.css$/,
                 loader: 'style-loader!css-loader',