Make an editable model for the LabCAS page

[nutjob4life]

🤔 Tell Us About the Feature

The current LabCAS page in production is a single "Raw HTML" block on a Web Page object. It works.

However, editing and extending the page with new features, updating links, and so forth, is difficult:

• It requires knowledge of HTML; the built-it editing features of Wagtail are not available
• It requires management of links; hyperlinks to the sub-pages must be hand-pasted in
• It requires management of resources' sources; links to the images that are displayed on the page must be first hand-edited and then hand-pasted it
• It cannot be displayed anywhere other than on the production site; because the page uses full URLs to sub-pages and edited URLs to resources, the page doesn't work properly on edrn-dev.nci.nih.gov nor on edrn-stage.nci.nih.gov—and worse, doesn't even appear correctly on the JPL-internal dev site

🎇 What Solution You'd Like

The LabCAS page should be replaced with a sophisticated block style that supports its unique needs

• A series of rows
• Each row has an icon and a hyperlink with a label
• Full-width images can appear in a row as well

This would simplify editing (even @hoodriverheather could do it), reduce errors (no more hand-management of hyperlinks and resource sources), enable QC on the NCI dev and staging platforms, and enable QC on the JPL internal dev site.

This shouldn't be specific to LabCAS, though—this type of page display could be extended to other parts of the portal.