A first pass at custom 404s per #407
Merge branch 'master' of github.com:concerto/concerto

* 'master' of github.com:concerto/concerto:
  allow notices to show on #create and update
  add file limit back that had been automatically removed
  remove stamps null directives that had been added automatically
  remove postgresql from gemfile
  remove postgresql from gemfile
  Added cursor: pointer to calendar input-prepend divs to close #610
  Removed bottom margin on form fieldset to close #668
  Fixed login form field widths...again.
  fix #669 rename concerto_configs group column to category