Adaptions after moving to group modulispaces

For reasons of participating in the OpenSource program of gitlab (see #91 (closed)) the admcycles and admcycles-asv projects were moved to the new group modulispaces. While there is a redirect from links to the old websites, it is probably still necessary to make various updates to reflect the new path:

• changes in documentation, readme
• make sure that asv still works fine
• move the repository https://gitlab.com/jschwab/relations-database to the group modulispaces (I think for this I should make @jschwab a maintainer for the group, then he could do the transfer via Settings -> Advanced)
• external websites pointing to the old gitlab adress?

I am happy for any help and also further additions to the list above.