Refer correct compression setting

play.api.libs.ws.ning.NingAsyncHttpClientConfigBuilder uses compressionEnabled not ws.compressionEnable:

  /**
   * Configures the global settings.
   */
  def configureWS(config: WSClientConfig) {
    import play.api.libs.ws.Defaults._
    builder.setConnectionTimeoutInMs(config.connectionTimeout.getOrElse(connectionTimeout).toInt)
      .setIdleConnectionTimeoutInMs(config.idleTimeout.getOrElse(idleTimeout).toInt)
      .setRequestTimeoutInMs(config.requestTimeout.getOrElse(requestTimeout).toInt)
      .setFollowRedirects(config.followRedirects.getOrElse(followRedirects))
      .setUseProxyProperties(config.useProxyProperties.getOrElse(useProxyProperties))
      .setCompressionEnabled(config.compressionEnabled.getOrElse(compressionEnabled))

    config.userAgent.map {
      useragent =>
        builder.setUserAgent(useragent)
    }
  }