[dataimport] fix ucsvreader for python3
The csv module in python3 wants str, so use a StreamReader to feed
csv.reader and don't decode the output
Document: cubicweb-doc
Title: CubicWeb documentation
Author: Logilab
Abstract: Some base documentation for CubicWeb users and developpers
Section: Apps/Programming
Format: HTML
Index: /usr/share/doc/cubicweb-documentation/index.html
Files: /usr/share/doc/cubicweb-documentation/*.html