fix in modelsize for undefined in boolean expression
requested to merge 415-add-a-tool-that-allow-to-estimate-the-size-of-the-model-related-to-the-asset-type into master
[En cours] Mise en place de quotas sur nos instances GitLab. Plus d'information sur : https://doc-si.inria.fr/pages/viewpage.action?pageId=146834656
[In progress] Quotas installation on our GitLab instances. More information: https://doc-si.inria.fr/pages/viewpage.action?pageId=146834656