Remove storage report page until it is fixed
There is a link on the admin page https://workbench.qr1hi.arvadosapi.com/users#Activity to https://workbench.e51c5.arvadosapi.com/users/storage which is no longer updated. On recent installations it reports all zeros and on cloud.curoverse.com it reports usage as of 2014 (!).
This should be removed until it's fixed.