Merged r11920 and r11921 from trunk to 2.3-stable (#14178)

pdf: restore "col_id_width" parameter of issues_to_pdf_draw_borders.

Contributed by Massimo Rossello.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/branches/2.3-stable@11924 e93f8b46-1217-0410-a6f0-8f06a7374b81