Winston Hearn wnstn

A metric starts its journey being added on the frontend, in Hymnal, as an impression tracker (in the tracker sidepanel). You can add as many trackers as you want per ad.
Separately, a clickthrough url is added, and notably, there is only one of these per ad.
- In the refactor, we'll need to update how clickthrough urls are handled, since currently they're handled by metrics_instrumentation, but we'll be refactoring HymnalAd to be the one responsible for keeping track of an ad's clickthrough url.
- We'll also need to update the rake task I wrote to migrate the current clickthrough_urls over to HymnalAds, from MetricsInstrumentation
From there, the tracker form is submitted, and for every tracker that was added, a new tracker object is created/saved in the db (after a check to make sure the url entered is a valid url)

	<html>
	<head>
	</head>
	<body>
	<script type="text/javascript">
	window.hymnalAdConfig = {
	id: 'f609c3cf-0a54-4d7f-a4ba-e8f3a7b96572',
	slug: '_test_client_cannes_demo_storybook_f609c3cf-0a54-4d7f-a4ba-e8f3a7b96572',
	adName: "Cannes Demo Storybook",
	type: 'Athena Template',