to set their default language and time zone preferences; added footer text
and account signup accept/decline rules; added additional implementation
of dictyionary code for future; minor cleanup of rendering config; and
so forth
(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
