Cleaned up regexes used in register-dataset.cgi to support arbitrary numbers of elements for keywords. Cleaned up regexes for state selection, to omit default values. Added debug as a GET parameter, so a page can be debugged by appending `&debug=1'. Committed latest changes to file processing, to allow files to be deleted after returning to the entry page from confirmation or processing errors. Seperated out entryForm.js from entryForm.tmpl to simplify debugging.