[devtools] make return value of get_response_header(raw=True) consistent wrt get_header(raw=True)
i.e. get_response_header(raw=True) now returns the first element of the list rather
than the list itself.
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