AnyRsetView: Refactor the columns_name method and update doc.
We drop the 'label_column_%s' % colidx pattern and add a clean column_label
method that might be overwritten by children class to alter the way default
columns headers are computed.
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