Create JS functions to manage DB query results

[VirtualDOMinic]

Relates to #25

This will likely be revisited (not quite "ongoing", but not done all at once) as the database queries change.

[VirtualDOMinic]

About to have a go at using a few object/array methods to get the results we want in this repl.it:

https://repl.it/@VirtualDOMinic/PeruLargeTelevisions

[VirtualDOMinic]

@sunuwars has created a function (and an example handlebars template) to do this on branch "query-and-data-structure". Me and @MissArray to continue this by checking what advice Aisha has, etc.

[sbinlondon]

Somewhat sorted! 🎉