gnucash maint: Revert "[net-charts] deoptimize accounts-list"

[John Ralls]

Updated	 via  https://github.com/Gnucash/gnucash/commit/70bc472f (commit)
	from  https://github.com/Gnucash/gnucash/commit/39575f22 (commit)



commit 70bc472ffe93b80ad12db56e75332d09d3b0c1df
Author: John Ralls <jralls at ceridwen.us>
Date:   Thu Sep 20 17:25:44 2018 -0700

    Revert "[net-charts] deoptimize accounts-list"
    
    This reverts commit 941acee04e3598c18eda8cb68c3b024da6f73ab1. It did
    indeed deoptimize creating a list of split-balances for time reports.



Summary of changes:
 gnucash/report/standard-reports/net-charts.scm | 56 +++++++++++++++++++++-----
 1 file changed, 46 insertions(+), 10 deletions(-)