Reformat news page with left clickable column

[pgleeson]

The news page (once it loads... see #202) has one single wide column. To match the rest of the website, it would be good if there was a left hand column (e.g. on here https://openworm.org/science.html) with a list of the news items (or dates of the stories, taken from the titles of the news items - if the full titles are too long). Source of news page: https://github.com/openworm/openworm.github.io/blob/master/news.html