Consolidate the many Printing related pages in Evince user help

Those gazillions of pages are hard to maintain and unneededly cumbersome. Plus:

• print-order.page and its image seem to be just copied from https://gitlab.gnome.org/GNOME/gnome-user-docs/blob/master/gnome-help/C/printing-select.page but not kept in sync
• print-select.page and its image seem to be copied from https://gitlab.gnome.org/GNOME/gnome-user-docs/blob/master/gnome-help/C/printing-order.page but not kept in sync

Both could be a simple <p>Please see <link xref="help:gnome-help/printing-*****" href="https://help.gnome.org/users/gnome-help/stable/printing-*****">the GNOME Desktop Help</link>.</p> but maybe we had standalone Windows users in mind here?