Ga4 account explorer#791

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diminishedprime wants to merge 6 commits intomainfrom

ga4-account-explorer-2

Commits on Oct 1, 2021

Added ga4 account explorer page.
diminishedprime
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Commits on Nov 15, 2021

wip.
diminishedprime
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Commits on Dec 7, 2021

Commits on Dec 30, 2021

implemented filtering when accounts/properties are picked.
diminishedprime
committed
got this to a workable state. Still needs some perf work, though.
diminishedprime
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