Add icon to link post heading in indexes

Merge pull request #43 from maxheld83/link-post

Link posts / Linklog (john gruber style, similar to hpstr)

Include Disqus script only if shortname is present in _config.yml

Merge pull request #38 from maxheld83/disqus

add disqus comments as per hpstr theme

include link posts in post index, with external url, timestamp

include sample link url, post

add disqus comments as per hpstr theme

Add .JPG and .jpeg extensions to Magnific Popup lightbox call. Fixes #33

Add whitespace below figure element. Fixes #32

Merge pull request #31 from maxheld83/hotlinked-images

Hotlinked images

Adjust size of author bio photo in footer

Correct author bio image alignment.
Fixes #24

Merge pull request #30 from maxheld83/gplus-handle

Accept Google+ handle instead of full URL for bio link and authorship stuff

cleanup

make feature images accept hotlinks

make twitter cards accept hotlinked images

Make google+ expect handle, not full url for head and author-bio

revert some change

Make twitter cards accept hotlinked images

fix google plus integration in bio, now accepts username