statistics: add tests, query and csv download button for librarian statistics#2661

Merged

PascalRepond merged 2 commits intorero:stagingfrom vgranata:grv-2371-tests-statistics-librarian

Mar 28, 2022

+555-166

Commits on Mar 21, 2022

statistics: add tests, query and csv download button for librarian statistics
vgranata
committed

Commits on Mar 24, 2022

statistics: change name of queries labels, order results and optimise query
vgranata
committed