Adapt pagewidth to window width dynamically, but only if not set by the user.
Adapt pagewidth to window width dynamically, but only if not set by
the user.

zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb