Update and move more docs to policies

Update the images and package maintenance pages and move them to polices.

The licensing section on the images pages is out of place. The process for
package management has changed now that we have everything in gitlab. We
no longer need a "MAINTAINED_IN_GIT.txt" file and the "third-party"
repositories have become redundant.

Signed-off-by: Martyn Welch <martyn.welch@collabora.com>

content/images.md → content/policies/images.md

@@ -39,7 +39,3 @@ Hardware]( {{< ref "/reference_hardware/_index.md" >}} )):
   - **armhf**: ARM 32bit (using u-boot)
   - **arm64**: ARM 64bit (using u-boot)
 
-The
-[licensing](https://designs.apertis.org/latest/license-applying.html)
-documentation describes the licensing expectations for the packages
-provided in each Apertis image type.
\ No newline at end of file

content/package_maintenance.md → content/policies/package_maintenance.md

@@ -9,14 +9,16 @@ aliases = [
 ]
 +++
 
-Apertis hosts its own package subset in [Collabora's Open Build Service
-(OBS) instance](https://build.collabora.co.uk). These OBS projects are
-used to host packages which makes up Apertis.
+Apertis hosts its own package subset on the
+[Apertis GitLab instance](https://gitlab.apertis.org/). On successful
+completion of the CI pipeline these are uploaded to
+[Collabora's Open Build Service (OBS) instance](https://build.collabora.co.uk)
+where the packages are formally built and hosted for Apertis.
 
 ## Packages Guidelines
 
-The package set is distributed in several OBS projects: `target`,
-`development`, `sdk`, `hmi`, `helper-libs`. Those projects are merged in
+The package set is distributed in several groups: `target`,
+`development`, `sdk`, `hmi`, `helper-libs`. Those groups are merged in
 a single repository, and split in what distribution names repository
 components (`target`, `development`, `sdk`, `hmi`, `helper-libs`).
 
@@ -27,9 +29,6 @@ documentation for details.
 
   - Source packages modified from upstream distribution include a
     versioning suffix 'co'.
-  - Source packages hosted in [Apertis Git](https://gitlab.apertis.org)
-    must contain an identification file in OBS (i.e. a file name
-    `MAINTAINED_IN_GIT.txt`)
   - Source packages in SDK are built only for supported SDK
     architectures (Intel 64 bit)
   - Source packages in `target`, `development`, `hmi`, `helper-libs` are
@@ -41,14 +40,5 @@ images can refer to `development` components.
 
 ## Requesting a new package
 
-If a new package is desired, the request should be placed in [Apertis
-issue tracker](https://phabricator.apertis.org).
-
-## Third party software projects
-
-[Third party Git](https://gitlab.apertis.org/third-party) tree projects
-are meant to help with rebasing Apertis patches against newer upstream
-versions. Those projects are updated in best effort bases, if you plan
-to work on them make sure that Git tree is in sync with the package
-found in OBS. These projects do not contain Apertis packaging
-directories.
\ No newline at end of file
+If a new package is desired, the request should be made following the relevant 
+[process](https://designs.apertis.org/latest/contribution-process.html#extending-apertis).