Update git stuff

pages/Git.md

 ---
-Title: Gitlab und Github
+Title: Gitlab and Github
 Author: Tamas
 Title:
   - use for software, plots and analysis
@@ -8,12 +8,28 @@ Title:
 status: dump
 ---
 
-KM3NeT uses GitLab as the main platform to develop and discuss software,
-analysis tools, papers and other private or collaborative creations. GitLab
-offers professional and advanced features to keep track of development history
-and allows a rich feature set to exchange thoughts and ideas around them. The
-continuous integration (CI) that is part of the GitLab distribution proves to be
-a powerful automation tool and is utilised to generate consistently up-to-date
-test reports, documentation and software releases in a transparent way.
+KM3NeT uses a self-hosted GitLab instance as the main platform to develop and
+discuss software, analysis tools, papers and other private or collaborative
+creations. GitLab offers professional and advanced features to keep track of
+development history and its rich feature set allows to exchange and archive
+thoughts and ideas easily. The continuous integration (CI) that is part of the
+GitLab distribution, proves to be a powerful automation tool and is utilised to
+generate consistently up-to-date test reports, documentation and software
+releases in a transparent way. The CI pipeline is triggered every time when
+changes are pushed to a project. Each job runs in an isolated Docker container
+which makes them fully reproducible.
 
-- docker
+In case of test reports for example, failing tests are signalised in merge
+requests and prevent changes that broke them to be applied accidentally. The
+documentation is also built in a dedicated pipeline job and is published to the
+web upon successful generation. A tight integration of the documentation into
+the software projects is mandatory and highly improves its up-to-dateness.
+
+The KM3NeT GitLab server is accessible to the public but only projects which are
+marked as _global_ are visible to a regular visitor without a KM3NeT account.
+They can download the projects and all the public branches, access the issues,
+documentation and Wiki, they however are not allowed to collaborate, i.e. to
+comment or contribute in any way. To circumvent this problem, open source
+projects are mirrored to a yet inofficial GitHub group
+(https://github.com/KM3NeT) where everyone with a GitHub account is allowed to
+interact.