[22967] Bug #589865 In the report "Budget flow" period it doesn't work ok

change the report head line to show the period date for (- period 1).
Author : Carsten Rinke <carsten.rinke@gmx.de>

git-svn-id: svn+ssh://svn.gnucash.org/repo/gnucash/branches/2.4@22974 57a11ea4-9604-0410-9ed3-97b8803252fd
[22968] Bug #584869 net change line in general journal report broken

Do not show any totals in the General Journal report.

According to

http://www.accountingtools.com/general-journal
and
http://accountophobia.blogspot.de/2012/06/general-journal.html

it is not the idea of the General Journal to show totals but
only list transactions.

This patch makes use of the ledger-type? flag and suppresses
the output of the Net Changes accordingly.

By that, the General Journal will not show Totals, but the
Account Report still does.

Author:    Carsten Rinke <carsten.rinke@gmx.de>

git-svn-id: svn+ssh://svn.gnucash.org/repo/gnucash/branches/2.4@22975 57a11ea4-9604-0410-9ed3-97b8803252fd