GitLab
The GitLab Community Edition is installed on the cluster and allows you to create Git repositories for your codes and documentations. Well, everything that is mostly text based.
It even bundles Continuous Integration support that allows you to build and test your code with each commits.
Login
With an account registered (see Getting Started page), open your web browser and go to https://gitlab.ig.umons.ac.be.
Enter your username and password inside the LDAP tab.

Figure 1. GitLab login screen