Support embedded visualization tools

[jeanetteclark]

Describe the feature you'd like

Add the ability to include some kind of visualization tool in portals (leaflet maps, for example).

Is your feature request related to a problem? Please describe.

We have received this request from a couple of different groups (SASAP, PerCS-Net). The specific request from Ben Jones of PerCS-Net is:

As part of the project we've been discussing providing a geotagged paper layer/portal. The idea would be to link published research papers with a location along the arctic coast so that people can more easily discover studies about particular sites. I was thinking that it could be neat to do this two different ways. One way would be to add a map interface to the publication page (similar to the data tab) on the ADC portal

Additional context

From slack, @laurenwalker remarked:

I imagine if a particular group had a map or viz right now that they wanted to display in their portal, we could “whitelist” their portal so that javascript doesn’t get stripped from their markdown sections. But it’s something that would require some further thought