Genericify refactor

[jsbnr]

DO NOT MERGE NOT COMPLETE!

This PR contains a refactor of some of the configuration and functionality moving it from hard coded config/javascript to config options with the intention to make it easier to deploy and use across multiple dashboards.

Main changes include:

• Query is now configurable as a viz option
• Disable zoom cluserting now a config option
• Center point of map can be specified as lat/lng coords, removed list
• Some naming updates to be less 'store' specific
• Changed how alert thresholds work, now powered by values defined in query (threshold_critical, threshold_warning), can also now work in both directions as required
• Removed hard coded required query result values and replaced with conventions (value, name, etc)
• Changed tooltip to appear on hover instead of click
• Made the tooltip content configurable via query values named convention tooltip_xxx
• Changed cluster colour to neutral grey instead of green.
• Made marker displayed value configurable via nrql value (icon_label)
• Added config option for refresh interval
• Changed the empty state to be more useful
• Fixed zero location result causing oops
• Added option to provide link in NRQL results which can be navigated by clicking on a marker

TODO:

• Review with Mat
• Decide what to do with regions

[matewilk]

Looks amazing, just a few minor comments.

[jsbnr]

Decision: to remove regions from the app, these can be added as a new feature so the code has been left in place but is not used.

[matewilk]

Looks good!