Fix problem with kernel update(?) on Linux
Fix problem with kernel update(?) on Linux

Tests complained "Text file busy (bad interpreter)", since the generated publish-script file was still openend for writing when we tried to execute it. Apparently, that's a no-no these days.

Thus, close the file and remove it explicitly in tearDown instead of relying on NamedTemporaryFile to do it.

ZeitOnline/zeit.cms,ZeitOnline/zeit.cms,ZeitOnline/zeit.cms,ZeitOnline/zeit.cms