Convert div#onclick to a

Regular links are more fun to use - you can cmd-click them in new tabs
etc. This doesn't work with onclick-ed divs.

Styling is consistent in Chrome and Firefox. Safari is not game with the
use of flexbox, but display: block at least keeps the behavior consistent.
Remove occurrences of clickable and goto

When cmd-clicking posts, the JavaScript event would cause the page to be
loaded both in the current and a new tab. This change removes the
JavaScript, but keeps styling and behavior as it was (full clickable
list elements)
Merge pull request #2 from cjohansen/linkify-divs

Linkify divs