No, acWBHighCharts.net doesn't contain the javascript code of Highcharts or Highstock charts because they belong to Highsoft company.

In order to use correctly acWBHighCharts.net in the ASP.NET web page or master page, the necessary Highcharts javascript files must be linked with a html <script> command, locally or with the CDN of Highsoft

Examples for highcharts:
<script type="text/javascript" src="/MyScripts/highcharts.js"></script>
<script type="text/javascript" src="http://code.highcharts.com/highcharts.js"></script>

Examples for highstock:
<script type="text/javascript" src="/MyScripts/highstock.js"></script>
<script type="text/javascript" src="http://code.highcharts.com/stock/highstock.js"></script>

See the acWBHighCharts.net documentation about this point.

Yes, it is possible to put several acWBHighcharts.net charts on the same web page, each with its own data source, including a web service.

If a highchart and highstock are on the same page, it is necessary to link only the highstock.js file, which already contains the highchart javascript code.