use the archive title in the individual library page

[kohlhase]

On the libraries page https://mathhub.info/mh/libraries we have a list of libraries (with titles) that links to individual library pages, e.g. https://mathhub.info/MitM which are generated from the library meta-inf directory. That has a title field, which is used in the general libaries page. It should be used for the lndividual library pages as well. e.g. for https://mathhub.info/MitM it should be

MitM: The Math-in-the-Middle Ontology

instead of just

MitM