fixes link to discontinued W3C Spec of Web Components, links to W3C Wiki for Web Components instead.
fixes link to whatwg doc template element
Merge pull request #146 from kiko01b/spec_web_components_link

fixes Spec links for WebComponents and Template on the frontage
Track homepage external links w/ GA

Closes #159
Update dependencies/devDependencies

Fixes #160
Change docpad build command