Point to old dataset pages from OpenFMRI

[mih]

https://legacy.openfmri.org/dataset/ds000113/
https://legacy.openfmri.org/dataset/ds000113b/
https://legacy.openfmri.org/dataset/ds000113c/
https://legacy.openfmri.org/dataset/ds000113d/

• file issue at openneuro to have the old landing pages redirect to these
• put info about them on the website
• check if some S3 downloads still work
• -check if all S3 downloads still work