resolves #150 only highlight code tags that have the hljs class

document the page.fileUri property in the UI model and the role it plays in the Edit this Page link [skip ci]

add elixir language to highlight.js bundle

add instructions to @import typeface-*.css file in master stylesheet

resolves #136 fix Error.call conflict when Opal is loaded

resolves #126 add index.js file to make project locatable using require.resolve

resolves #134 add flex: auto to article so it expands to available width

resolves #112 unmangle pseudo-element selectors

resolves #129 force words to break that don't fit within available space

* word-wrap: break-word globally
* word-break: break-word in table cells

resolves #96 add pagination links to head and nav to bottom of page