Add div.clear to each story

This fixes a bug, where short stories incorrectly lay one on another.
Add dotted underline to .story-text > a
Go to main page on click on logo
Change line height in story text to 20px (increase)
Change .page width to 760px, add horizontal padding 10px

Now it looks great on 800px screens.
Add share links to stories

Just get them as jQuery object and append during rendering.
Fix unit tests for story parsing

Check only for expected values in parse results, don't check if there're
only these values (there're also share links, which we don't test,
for example).
Rename $shareLinks to $socialLinks
Remove social links

This reverts c9d419.
Finally, I decided that socail links are crap and we don't need them.
Permalinks are excellent.
Add permalink to each story: make story title a link

Turn div.story-title into a.story-title, add href and title (attribute) saying
that you this is a permalink to this story.
Merge branch 'develop'
Increment version: 0.4.1