Eliminated some debugging code.
Fixed form tag on home page to do a GET instead of a POST.
For rows where the database values of lat, lon, mean, or stat is NULL, output "[missing]" to the CSV file.
Fixed broken links to contact page.
Added a named route to the user guide.
Use named routes to fix links to maps and to documentation.
Added a named route to the data entry guide.
Transparent changes: Reformated code to make it more readable, and
added some RDoc-compatible documentation to make it more
understandable.
Merged in master branch.
Fixed sorting citations by column.
pre-push merge