release v0.031

 - fix test failure because config not found
 - fix daemon continually rebuilding the site
 - fix tags list not appearing on blog list pages
 - give better error when site object not found
 - give better error when config file not found
 - remove tests that could redefine subs
 - fix setlocale test may fail and return current locale
 - remove test for switching STDIN back to our tty
 - fix RSS pubDate incorrectly using locale setting
 - add link to home page in main documentation
 - add release announcement for v0.030
 - fix site.yml for renamed File store