style: fixed footer for site
style: use contrast color for selections
style: simplify style

- remove tympanus separators.  only ended up using the circle effect, and inline with the footer.
refactor: prefix urls with url template global
feat: google analytics
refactor: move footer styles into separate less file
refactor(url): base url end has trailing slash
feat(pages): if a github repo is specified generate icon button link

- fix w3c html5 validation errors.
chore: remove unused custom font

- fontawesome is used for social icons
docs: replace ipsum about with acl page
refactor(DRY): move svg triangle into header partial
chore: include html5shiv for ie8
chore: add link to deployed pow2 app
chore: tweak wording on main page descriptions
chore: inline html5shiv for IE < 9

 - put bower components in an underscore dir for harp to ignore
chore: fix reference to head meta in articles layout