Copies of texts are not locally stored in this database (for now) and instead links to the actual texts are provided (P5). In the spirit of open access to knowledge contributors are strongly encouraged to provide links to openly accessible versions of the articles indexed (either to originally OA publications or pre-prints of non-OA publications etc).
Christos Varvantakis is an employee of Wikimedia Deutschland. He certainly isn't an experienced user of wikibase and the set up of this database is to a large extent a learning curve for him.
The image used in the logo is by Wikimedia Commons: 'An employee of EMPA in St. Gallen, 1964' by Hans Baumann, Comet Photo AG (Zürich).