core/server.py:  The `ApplicationWebSocket.base_url` parameter (which is set inside `ApplicationWebSocket.open()`) will now be overridden inside of `ApplicationWebSocket.authenticate()` if the client provides a URL as part of the handshake.  This should resolve the issue where fonts would not load if you were using Gate One with 'disable_ssl=True' in conjunction with a 'url_prefix' behind a reverse proxy that *was* using SSL (if we're getting to the point where bugs are this specific it's probably a good indication of stability!).
core/server.py:  Improved a few docstrings here and there.
core/configuration.py:  Removed some redundant "Default: <whatever>" strings from the `define()` calls.  Tornado now displays the defaults on its own so there's no need to have this info in the help.
core/configuration.py:  Removed the `--syslog_host` option as it is no longer used and was never really necessary.
app_terminal.py:  Removed references to the `--syslog_host` option.
Documentation:  Updated and re-built.  Lots of docstrings updated all over the place, in fact.
termio.py:  Removed the `syslog_host` keyword argument to `BaseMultiplex()` as well as a few other references to it here and there.