Evaluate designs

Evaluate a number of design documents, sorting/merging into website properly. Make small improvements to main page in passing.

content/architecture/long-term-reproducibility.md

@@ -261,9 +261,9 @@ version shipped in the Apertis repositories.
 ## Main artefacts and metadata
 
 The purpose of the previously described software items is to generate a set of
-artefacts, such as those described in [the v2019 release artefacts
-document]( {{< ref "release-v2019-artifacts.md" >}} ). With the artefacts themselves a few metadata
-entries are generated to help tracking what has been used during the build.
+artefacts, such as those described on the [images]( {{< ref "images.md" >}} )
+page. With the artefacts themselves a few metadata entries are generated to
+help tracking what has been used during the build.
 
 In particular, the `pkglist` files capture the full list of packages installed
 on each artefacts along their version. The `filelist` files instead provide