Enhance demo

[friendlymatthew]

Fixes: #46

What this PR contains

• update build script to handle the -jsonl flag
• upon Execute query being clicked, the query gets validated first. If the query is not valid it will emit a message like this:

• when you edit a key value, it synchronizes and updates the other key value so you don't need to edit both the where key value and orderBy key value. This is nice because the same field we filter by must be used for sorting
• css work so overall demo is more structured