Downloading folder from the Catalog doesn't expand links

[Xarthisius]

When downloading a folder via GET /folder/:id/download child items are not resolved. As a result you get a zipball with a bunch of text files containing urls:

$ tree Humans\ and\ Hydrology\ at\ High\ Latitudes\ Water\ Use\ Information/
Humans and Hydrology at High Latitudes Water Use Information/
├── AK_counties_2000.xls
├── datadict2000.html
├── datadict2005.html
├── dictionary95.txt
├── estimated_use_of_water_in_US_2000.pdf
├── estimated_use_of_water_in_US_2005.pdf
├── first_nations_canada_water_and_wastewater_systems.pdf
├── readme.html
├── us85co.xls
├── us90co.xls
├── usco2000.xls
├── usco2005.xls
├── usco95.xls
├── wastewaterNWT.xls
├── withdrawal_ob_engl.xls
└── wudict.txt

0 directories, 16 files
$ cat Humans\ and\ Hydrology\ at\ High\ Latitudes\ Water\ Use\ Information/readme.html 
https://cn.dataone.org/cn/v2/resolve/urn:uuid:7f3d0f47-56db-4562-bdff-1182b78302ef