We need a better way to manage events

[ColinEberhardt]

Currently it is a data-dump from our old site: https://github.com/ScottLogic/blog/blob/gh-pages/events.xml

[ColinEberhardt]

I think a good way to proceed would be to ...

• migrate the XML data-dump content into markdown
• remove the code that fetches via XHR and render using the standard Jekyll templates

I'd be keen to retain as much information about the events as possible. We might only render a sub-set, but having that data there is quite helpful and we may use it in the future.

[ColinEberhardt]

fixed #19