Improve title case

[waldoj]

The Lexis-Nexis XML identifies structural labels in all caps. We transform it to mixed case, but that results in titles like "Common Law And Rules Of Construction" instead of the properly title-cased "Common Law and Rules of Construction." Figure out how to solve this (which is surely non-trivial in XSLT).

[waldoj]

The solution might be to deal with this within the importer, rather than within the XSLT.