, create some sort of initialising only once

[todo]

codetap.academy/src/component/web-data/web-data.component.js

Lines 19 to 24 in 708286e

	// TODO, create some sort of initialising only once
	// or check if an element exists by id, or whatever
	// works so you get the list once and on snapshot change
	// only adds the first ones if the list hasn't been initialised.
	// const courseList = snapList.docs.map(d => {
	// return {

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This issue was generated by todo based on a TODO comment in 708286e when #73 was merged. cc @codetapacademy.