The functions of this namespace are specifically responsible for generating
data structures to be consumed by site page templates.

Of special note: this namespace and its sibling `page` namespace are only
ever meant to be used in the `cmr.search.site` namespace, particularly in
support of creating site routes for access in a browser.

Under no circumstances should `cmr.search.site.data` be accessed from outside
this context; the data functions defined herein are specifically for use
in page templates, structured explicitly for their needs.

The functions of this namespace are specifically responsible for returning
ready-to-serve pages.