Update the site for 2017

[adrianbanks]

These changes:

• reset the site back to the right state for the start of the conference.
• update the conference id for the 2017 event
• add Adam to the team
• update the venue details

I'm still waiting for a picture of Adam, but once that is in it should be good to go.

[adrianbanks]

⚠️ Don't merge until I add a picture of Adam.

[adrianbanks]

@CraftyFella has given this the 👍 in slack.

We'll add Adam's photo in a separate change.