[Evergreen-documentation] Docs site post 3.7 release

[Blake Henderson]

All,

I just wanted to let everyone know that I updated the site with a couple 
of things:

1. I merged our footer onto the site template so that each page displays 
the email link for the DIG mailing list.

2. I updated the search index (the search box in the top right) - so 
that the search results only show results from "latest" - to prevent the 
multiple search results for each version of Evergreen. The commit is here:
https://git.evergreen-ils.org/?p=Evergreen.git;a=commit;h=9eae8a68f3012f2016dfe9c5ab3fc23e818307b3 
<https://git.evergreen-ils.org/?p=Evergreen.git;a=commit;h=9eae8a68f3012f2016dfe9c5ab3fc23e818307b3>

3. I synced the Antora community UI templates over to our customized 
ones, thereby including all the new features since June 2020. A list of 
updates from their repository is detailed here:
https://gitlab.com/antora/antora-ui-default/-/commits/master/ 
<https://gitlab.com/antora/antora-ui-default/-/commits/master/>


Our resulting document site looks basically the same. The most notable 
difference is the existence of 3.7! The Antora UI skin received several 
internal updates. Most of them were variable naming conversions (no end 
change to the UI). And cleanups to the CSS. It's a good idea to keep in 
sync with that repository as much as we can because when the new version 
of Antora comes out, the UI pieces will likely receive updates as well. 
And having our repository closer to master makes it easier to reconcile 
the changes.

I am thinking about writing some documentation about the documentation 
:) - A technical write-up of how to merge the antora community UI 
repository over to our eg-antora repository. Should that have a home in 
our Evergreen docs? Or doku wiki? I favor the Evergreen docs because 
it's easier to find and is likely to be maintained by us.

-- 
-Blake-
Conducting Magic
Can consume data in any format
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