Missing prependSufix preprocessor argument

[MattiasAJohansson]

When issuing a HTTP GET with arguments: Ex. myapp/index.html?v=1.0 it fails with error:

 Error: Unexpected request: GET myapp/index.html?v=1.0

adding a prependSufix in createHtml2JsPreprocessor  fixes this:
...createHtml2JsPreprocessor ... {
...
  var prependSufix = config.prependSufix || '';
...
    return prependPrefix + filepath.replace(stripPrefix, '').replace(stripSufix, '') + prependSufix;