the basis of the conferencing engine is now firmly in place
* tweaks to the HTML Checker to make it better at breaking lines without
leaving stranded punctuation at the beginning or end of a line
* also modified dictionary to better handle possessives and hyphenates
* as always, miscellaneous tweaks and bugfizes as I spot them
(first workout of HTML Checker code)
* modified the dictionary implementation to use a trie system rather than
a set of HashSets, and also started using a new, much smaller dictionary
* general bugfixes and cleanup on other items as needed
