Tidy up repository and servers

[sunnydean]

Tidying up repository and make one server a production one and one a development one

[wu-lee]

I'm going to split this ticket to cover the various parts of the job (as I see it). Some of this has been done already. Comments welcome.

• Make the map-app a self-contained NPM package in its own repository, for ease of re-use #192
• Convert the linked-data sausage factory into a self-contained application in its own repository #193
• Identify the components needed to deploy a mini-website server / SPARQL data endpoint #194
• Propose how to separate development from live deployments of SEA's websites (or at least the map websites) #195
• execute this proposal #196

[wu-lee]

Closing as redundant - see sub tickets