cubicweb #3597299 queries should not be logged for data urls [open]

Now that cubicweb uses controllers to serve data files, "query-log-file" adds a log line for each of those requests making the resulting log file harder.

For instance, if we ask for /some/url, we get something like:

********************************************************************************
http://<base-url>/some/url
[list of rql queries]
********************************************************************************
http://<base-url>/<data-md5>/file1.css
********************************************************************************
http://<base-url>/<data-md5>/file2.css
********************************************************************************
http://<base-url>/<data-md5>/file3.css
********************************************************************************
http://<base-url>/<data-md5>/file1.js

In the example above, only the first section is actually useful.

prioritynormal
typeenhancement
done in<not specified>
load0.100
load left0.100
closed by<not specified>