Update and clarify the image downloads page for v2022

The previous layout assumed that v2021, and its image types, were
stable, and the new image types (FixedFunction and HMI) were
development-only. As a result, several of the links were broken, and the
relation between image releases and the overall page layout was rather
confusing.

https://phabricator.apertis.org/T8593



Signed-off-by: Ryan Gonzalez <ryan.gonzalez@collabora.com>

content/download.md

 +++
 date = "2020-09-02"
-lastmod = "2021-09-06"
+lastmod = "2022-04-05"
 weight = 100
 
-title = "Image Download"
+title = "Image Downloads"
 +++
 
 The Apertis project provides a number of images, designed for evaluation and
-development purposes. The Apertis project recommends to use the current stable
-release images presented below for evaluation.
+development purposes. Presented below are the downloads for the project's latest
+stable release
+({{< release-info Stable version >}}.{{< release-info Stable revision >}}),
+the recommended version for evaluation purposes.
 
 - **SDK**: The SDK is a development environment primarily designed to be run in
   [VirtualBox]({{< ref "virtualbox.md" >}}).
 
-  | Image | Optional Downloads |
-  | ----- | ------------------ |
-  | [Intel 64-bit (amd64)]({{< image-url Stable amd64 sdk >}}) | |
-
-- **Minimal**: Up to v2021, a compact image, utilizing
-  [OSTree]({{< ref "guides/ostree.md" >}}) for updates, designed to be run as a
-  headless system on [target hardware]({{< ref "reference_hardware" >}}).
-
-  | Image | Optional Downloads |
-  | ----- | ------------------ |
-  | [Intel 64-bit (amd64)]({{< image-url Stable amd64 minimal ostree >}}) | [bmap file]({{< image-url Stable amd64 minimal ostree bmap >}}) |
-  | [ARM 32-bit (armhf)]({{< image-url Stable armhf minimal ostree >}}) | [bmap file]({{< image-url Stable armhf minimal ostree bmap >}}) |
-  | [ARM 64-bit (arm64)]({{< image-url Stable arm64 minimal ostree >}}) | [bmap file]({{< image-url Stable arm64 minimal ostree bmap >}}) |
+  | Image |
+  | ----- |
+  | [Intel 64-bit (amd64)]({{< image-url Stable amd64 sdk >}}) |
 
-- **FixedFunction**: Since v2022dev3, a compact image, utilizing
-  [OSTree]({{< ref "guides/ostree.md" >}}) for updates, designed to be run as a
-  headless system on [target hardware]({{< ref "reference_hardware" >}}).
+- **FixedFunction**: A compact image, utilizing [OSTree]({{< ref
+  "guides/ostree.md" >}}) for updates, designed to be run as a headless system
+  on [target hardware]({{< ref "reference_hardware" >}}).
 
   | Image | Optional Downloads |
   | ----- | ------------------ |
@@ -37,26 +29,15 @@ release images presented below for evaluation.
   | [ARM 32-bit (armhf)]({{< image-url Development armhf fixedfunction ostree >}}) | [bmap file]({{< image-url Development armhf fixedfunction ostree bmap >}}) |
   | [ARM 64-bit (arm64)]({{< image-url Development arm64 fixedfunction ostree >}}) | [bmap file]({{< image-url Development arm64 fixedfunction ostree bmap >}}) |
 
-- **Target**: Up to v2021, a more featureful image, utilizing
-  [OSTree]({{< ref "guides/ostree.md" >}}) for updates, providing an example
-  graphical environment and designed to be run on
-  [target hardware]({{< ref "reference_hardware" >}}).
-
-  | Image | Optional Downloads |
-  | ----- | ------------------ |
-  | [Intel 64-bit (amd64)]({{< image-url Stable amd64 target ostree >}}) | [bmap file]({{< image-url Stable amd64 target ostree bmap >}}) |
-  | [ARM 32-bit (armhf)]({{< image-url Stable armhf target ostree >}}) | [bmap file]({{< image-url Stable armhf target ostree bmap >}}) |
-  | [ARM 64-bit (arm64)]({{< image-url Stable arm64 target ostree >}}) | [bmap file]({{< image-url Stable arm64 target ostree bmap >}}) |
-
   {{% notice note %}}
-  No open graphical stack is available for the current stable release on the
-  arm64 reference hardware and thus target images aren't available.
+  This image variant was introduced in v2022dev3 as a successor to the previous
+  *minimal* images.
   {{% /notice %}}
 
-- **HMI**: Since v2022dev3, a more featureful image, utilizing
-  [OSTree]({{< ref "guides/ostree.md" >}}) for updates, providing an example
-  graphical environment and designed to be run on
-  [target hardware]({{< ref "reference_hardware" >}}).
+- **HMI**: A more featureful image, utilizing [OSTree]({{< ref
+  "guides/ostree.md" >}}) for updates, providing an example graphical
+  environment and designed to be run on [target hardware]({{< ref
+  "reference_hardware" >}}).
 
   | Image | Optional Downloads |
   | ----- | ------------------ |
@@ -65,8 +46,8 @@ release images presented below for evaluation.
   | [ARM 64-bit (arm64)]({{< image-url Development arm64 hmi ostree >}}) | [bmap file]({{< image-url Development arm64 hmi ostree bmap >}}) |
 
   {{% notice note %}}
-  No open graphical stack is available for the current stable release on the
-  arm64 reference hardware and thus hmi images aren't available.
+  This image variant was introduced in v2022dev3 as a successor to the previous
+  *target* images.
   {{% /notice %}}
 
 {{% notice info %}}

layouts/shortcodes/release-info.html

+{{- $release := (.Get 0) -}}
+{{- $attr := (.Get 1) -}}
+{{- index (index .Site.Data.releases $release) $attr -}}