#4259 time zone availability

[glickgNU]

Changes

The availability calendar changes depending on user's timezone.

To Do

Any remaining things that need to get done

• item 1
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Closes #4259

[wavehassman]

I want to make it clear that the times are shown in your local time zone on the calendar and on the availability page. Maybe just a comment like "Times shown in your local timezone (PST)" so no one is confused