gnucash master: Multiple changes pushed

[Christopher Lam]

Updated	 via  https://github.com/Gnucash/gnucash/commit/4b21244d (commit)
	 via  https://github.com/Gnucash/gnucash/commit/1ac6262a (commit)
	 via  https://github.com/Gnucash/gnucash/commit/3b9233de (commit)
	from  https://github.com/Gnucash/gnucash/commit/7306f2dd (commit)



commit 4b21244da874a9a64fc49e363d3dde4f59f710ee
Author: Christopher Lam <christopher.lck at gmail.com>
Date:   Sun Jun 16 10:24:05 2019 +0800

    [report] remove top-level flag no longer needed after 30ac2cf26

commit 1ac6262a06ed1f49c392c18a7d0aad8dad6ecb93
Author: Christopher Lam <christopher.lck at gmail.com>
Date:   Sat Jun 15 13:47:53 2019 +0800

    [net-charts] ensure grid is enabled in barchart
    
    previously barcharts did not have grid, an odd omission

commit 3b9233de3adc55cb678584944bfff050c94afa45
Author: Christopher Lam <christopher.lck at gmail.com>
Date:   Sat Jun 15 08:30:09 2019 +0800

    [test-stress-options] ensure max is not called with empty list
    
    some reports e.g. sample-graphs.scm may have no options; this commit
    causes max to be called with at least 1 parameter (max 0) --> 0.



Summary of changes:
 gnucash/report/report-system/report.scm                      | 4 ----
 gnucash/report/reports/standard/net-charts.scm               | 2 +-
 gnucash/report/reports/standard/test/test-stress-options.scm | 5 +++--
 3 files changed, 4 insertions(+), 7 deletions(-)