* conversion stage 1

* correct image paths

* add sidebar title to frontmatter

* docs/concepts and docs/internals

* configuration docs and multi-level nav corrections

* commands docs, index file corrections, small item nav correction

* secrets converted

* auth

* add enterprise and agent docs

* add extra dividers

* secret section, wip

* correct sidebar nav title in front matter for apu section, start working on api items

* auth and backend, a couple directory structure fixes

* remove old docs

* intro side nav converted

* reset sidebar styles, add hashi-global-styles

* basic styling for nav sidebar

* folder collapse functionality

* patch up border length on last list item

* wip restructure for content component

* taking middleman hacking to the extreme, but its working

* small css fix

* add new mega nav

* fix a small mistake from the rebase

* fix a content resolution issue with middleman

* title a couple missing docs pages

* update deps, remove temporary markup

* community page

* footer to layout, community page css adjustments

* wip downloads page

* deps updated, downloads page ready

* fix community page

* homepage progress

* add components, adjust spacing

* docs and api landing pages

* a bunch of fixes, add docs and api landing pages

* update deps, add deploy scripts

* add readme note

* update deploy command

* overview page, index title

* Update doc fields

Note this still requires the link fields to be populated -- this is solely related to copy on the description fields

* Update api_basic_categories.yml

Updated API category descriptions. Like the document descriptions you'll still need to update the link headers to the proper target pages.

* Add bottom hero, adjust CSS, responsive friendly

* Add mega nav title

* homepage adjustments, asset boosts

* small fixes

* docs page styling fixes

* meganav title

* some category link corrections

* Update API categories page

updated to reflect the second level headings for api categories

* Update docs_detailed_categories.yml

Updated to represent the existing docs structure

* Update docs_detailed_categories.yml

* docs page data fix, extra operator page remove

* api data fix

* fix makefile

* update deps, add product subnav to docs and api landing pages

* Rearrange non-hands-on guides to _docs_

Since there is no place for these on learn.hashicorp, we'll put them
under _docs_.

* WIP Redirects for guides to docs

* content and component updates

* font weight hotfix, redirects

* fix guides and intro sidenavs

* fix some redirects

* small style tweaks

* Redirects to learn and internally to docs

* Remove redirect to `/vault`

* Remove `.html` from destination on redirects

* fix incorrect index redirect

* final touchups

* address feedback from michell for makefile and product downloads