Sia v2 cleanup

[jkrick]

closes #240
closes #106

This completely re-works the SIA_allwise notebook to be both functional and follow what I think are best practices for accessing IRSA SIA v2 datasets. It also now conforms to the template format for this repo.

The old notebook was neither functional nor followed current best practices.

[bsipocz]

Thank you, this looks so much nicer than the previous PR.
I would also say that we probably need to delete at least some of those notebooks as we consider this as a replacement (either even reusing the name, or simply just delete them).

We haven't done it before so it's also OK to do that in a separate PR, in case you want to keep a tally of retired/legacy notebooks, etc.

[jkrick]

@bsipocz I think this is failing ci because of the firefly, but please let me know if there is also something else. And, yes, I would like to delete the other notebooks in a different PR because I want to turn one of them into a notebook with this format first.

[bsipocz]

yes, we do use FireflyClient.make_client(url="https://irsa.ipac.caltech.edu/irsaviewer") in the other notebooks and I think we should do the same here.

But @jaladh-singhal can comment on it how to proceed.

[jaladh-singhal]

@jkrick These updates should make the CI pass and make the Firefly part more clear for the tutorial readers.

[jaladh-singhal]

I suggest hyperlinking the docs here since it may not be trivial for people to understand what is Firefly and how to initialize it from Python.

Maybe something like:

Suggested change

	Finally, we use the open-source astronomy data visualization software Firefly to display the fits image in a new tab.
	Finally, we create an interactive FITS display of the W3 image(s) by [using Firefly](https://caltech-ipac.github.io/firefly_client/index.html), an open-source interactive visualization tool for astronomical data.
	To understand how to open the Firefly viewer in a new tab from your Python notebook, refer to [this documentation](https://caltech-ipac.github.io/firefly_client/usage/initializing-vanilla.html) on how to initialize FireflyClient.```