Revert "webtest doesn't need actual filenames"
Revert "webtest doesn't need actual filenames"

This reverts commit 41cf922304d8713dcb26c53e9036eba86539da94.

perceptron-XYZ/ckanapi,wardi/ckanapi,xingyz/ckanapi,eawag-rdm/ckanapi,metaodi/ckanapi,LaurentGoderre/ckanapi