Improved reading of messages with ANSI content - It now can use a scrollable user interface when reading messages with ANSI content.  Also added a new option in the configuration file, readerInterfaceStyleForANSIMessages, to specify whether to use the scrollable interface or the traditional interface when reading ANSI messages.  It will use frame.js and scrollbar.js, if available on the BBS machine, for reading ANSI messages with a scrollable interface (but it still uses its own scrolling behavior for non-ANSI messages, as before).  This is still a 'beta' version, as there are some more changes I'd like to make before making an official release.