Problem with prefetched files

[RubenGuerrero]

This is my webpack file:

var webpack = require('webpack');
var path = require('path');

var autoprefixer = require('autoprefixer');

var ExtractTextPlugin = require('extract-text-webpack-plugin');
var ManifestRevisionPlugin = require('manifest-revision-webpack-plugin');

var rootAssetPath = './src/static';

var FLASK_URL = process.env.FLASK_URL;
var publicURL = (FLASK_URL ? FLASK_URL : '/');

var plugins = [
  new webpack.DefinePlugin({
    'process.env.NODE_ENV': JSON.stringify('production')
  }),
  new ManifestRevisionPlugin(path.join('build', 'manifest.json'), {
      rootAssetPath: rootAssetPath,
      ignorePaths: ['/styles', '/scripts', /\.DS_Store/, /sitemap\.xml/, /robots\.txt/]
  }),
  new ExtractTextPlugin('[name].[chunkhash].css')
];

if(process.env.NODE_ENV === 'production'){
  plugins.push(new webpack.optimize.UglifyJsPlugin({
    compress: {
      warnings: false
    }
  }));
}

module.exports = {
    entry: {
        app_css: [
            rootAssetPath + '/styles/main.scss'
        ],
        landing_css: [
            rootAssetPath + '/styles/main-landing.scss'
        ],
        app_js: [
            rootAssetPath + '/scripts/entry.js'
        ]
    },
    output: {
        path: './build/public',
        publicPath: publicURL + 'public/',
        filename: '[name].[chunkhash].js',
        chunkFilename: '[id].[chunkhash].js'
    },
    resolve: {
        extensions: ['', '.js', '.css', '.scss', '.ttf', '.woff', '.svg'],
        modulesDirectories: ['node_modules'],
        alias: {
          'handlebars' : 'handlebars/dist/handlebars.js'
        },
        root: path.resolve(__dirname, 'modules')
    },
    module: {
        preLoaders: [{
          test: /\.js$/i,
          exclude: /node_modules/,
          loader: 'eslint'
        }],
        loaders: [
            {
                test: /\.js$/i,
                loader: 'babel',
                query: {
                  presets: ['es2015', 'stage-0']
                },
                exclude: /node_modules/
            },
            {
                test: /\.(jpe?g|png|svg|ico|gif([\?]?.*))$/i,
                include: [
                  path.resolve(__dirname, 'src'),
                  path.resolve(__dirname, 'modules')
                ],
                loaders: [
                    'file-loader?name=[path][name].[hash].[ext]'/*,
                    'image?bypassOnDebug&optimizationLevel=7&interlaced=false'*/
                ]
            },
            {
              test   : /\.(ttf|eot|svg|woff(2)?)(\?[a-z0-9=&.]+)?$/,
              exclude: [ /images/ ],
              include: [
                path.resolve(__dirname, 'src'),
                path.resolve(__dirname, 'modules')
              ],
              loader : 'url-loader?name=[path][name].[hash].[ext]'
            },
            {
              test: /\.s?css$/,
              loader: ExtractTextPlugin.extract('style', 'css?sourceMap&camelCase&importLoaders=1!postcss!sass?sourceMap')
            }
        ]
    },
    postcss: [autoprefixer],
    plugins: plugins
};

Problem:
If I import a file from .js or .scss files, this file is not wrote on the manifest.json.

Example:

I have photo.png on images folder.
If I don´t do anything with this image all works okey, but if I import photo.png from any .js or .scss file photo.png asset is not printed on manifest.json

Any idea?