Add some emacs .dir-locals
Add a test for downloading files.

There already was a test doing it, but it was rather concentrating on
authentication, so I renamed it to testFileDownloadAuth. The new test
checks how the server behaves when downloading nonexistent or files
with no read permissions.
Send a reply immediately if file is not readable to begin download.

Hinted by Steve Dabner.
Remove leading colons.

QMake bails out with an error everytime I try to load/include the
.prf/.pri file.
Initialize all member variables in Job instances.
wip: fault handling