add route and partial for Feed template
add livereload for HTML files
set base font-families
style data-group-header
styled overview at 2 column screen width
styled overview for 6+ columns
history as definition list
add header info
placeholder for maps
Merge branch 'show-feed-template' of
https://github.com/lightergrey/VotingInfoApp into feed-template

These commits add a template for the show feed page (single feed overview).
Where applicable I updated the styleguide page too. I also added an HTML grunt
livereload.