gnucash master: "Sorting" tab overhaul to improve UI

[Geert Janssens]

Updated	 via  https://github.com/Gnucash/gnucash/commit/53fbc6f6 (commit)
	from  https://github.com/Gnucash/gnucash/commit/75b5a41e (commit)



commit 53fbc6f62fe1037da31e512e915bba15249ab6fc
Author: christopherlam <christopher.lck at gmail.com>
Date:   Mon Sep 11 23:27:04 2017 +0800

    "Sorting" tab overhaul to improve UI
    
    This change will ensure the Sorting tab only presents *valid* options. e.g.
    Changing Primary Sortkey to 'none will disable its descendant options.
    Changing to 'Date will enable Date-interval choice.
    Changing to 'Account-name will enable relevant account-name options.
    Usability fix. This should help newcomers.



Summary of changes:
 gnucash/report/standard-reports/transaction.scm | 192 +++++++++++++++++-------
 1 file changed, 138 insertions(+), 54 deletions(-)