Dynamically configure websocket service port, don't attempt htmlterm embed if no such service enabled.

Use FlashPolicy section of services.ini if available, don't attempt to embed if no socket policy server enabled.

Display a message to people (eg. folks running Haiku and using some weird browser) who don't have Flash Player installed.

Set ClientVars.ConnectAnsi to http://<hostname>:<port>/<appendURL>/ftelnet/ftelnet-resources/connectansi.txt.
Users may overwrite this file with an ANSI graphic of their choosing.

The biggest issue was that end tags inside a script element are still part
of the outer document so this:

<b>
<script type="text/javascript">
document.write('Hello!'); // Don't forget the </b>
</script>
</b>

Would be illegal because the <b> tag was ended twice.
*ARGH*

target is deprecated in 4.01 and can not be used by strict... something else
will need to be done.

canPost is true if MsgBase is 'mail', otherwise canPost = MsgBase.cfg.can_post. (printSubBoard) (thanks, pfortran!)