Added support for diacritics in names and ability to edit names

You can now edit a person's name via the /people/{vanId}/names and /bulkImportJobs endpoints, including in the voter file. "Source File" name properties have been added to the Person model, and First, Middle, and Last Name lengths have been updated to accommodate longer names and unicode characters. Additionally, in order to support diacritical characters in names across the broadest array of readers and platforms, any endpoints that produce an output file will now be in UTF-8 BOM encoding.