CBG-301: Location List webapp now includes a filter for Dead accesions. And for Rare ones, too.

This commit includes a short laundry list of other changes, one quite far reaching:

* The CGI form (cgi.FormStorage) is now parsed out into a standard dict. Ergo, to get values, use
  form.get('value') rather than form.getvalue('value').  This affected many lines of code, bit
  is strictly speaking trivial.

* The focus and "location2 default" behavior have been generalized to apply to all webapps.  This
  will reduce a few keystrokes in most webapps, not just the two one Julian initially modified.
  (Plagiarism is the sincerest form of flattery!)

* The font size of the tablesorter table cells has been increased to 12pt (from 8pt).

* The autosuggest script now implements a relatively accurate version of the
  SELECT statement used in the regular UI (thanks for working that out, Ray).