gnucash maint: Multiple changes pushed

[Christopher Lam]

Updated	 via  https://github.com/Gnucash/gnucash/commit/f4794d51 (commit)
	 via  https://github.com/Gnucash/gnucash/commit/7bb7d3cd (commit)
	from  https://github.com/Gnucash/gnucash/commit/f4379bbd (commit)



commit f4794d516ffa194dcf2fe4af9e4cd2ace2c30f65
Author: Christopher Lam <christopher.lck at gmail.com>
Date:   Wed Oct 9 05:40:00 2019 +0800

    [test-report-html] add tests for html-table-cell row/col modifiers

commit 7bb7d3cdd655d23c7af902e57aa6326df59933c1
Author: Christopher Lam <christopher.lck at gmail.com>
Date:   Mon Oct 7 23:18:34 2019 +0800

    [html-document] schemify gnc:html-document-tree-collapse
    
    this function is technically a flattening function, converted to
    classic scheme form. very efficient in time and space. it is used
    extensively in reports which are still running well, therefore no
    additional testing is required.



Summary of changes:
 gnucash/report/report-system/html-document.scm     | 19 ++++--------
 .../report/report-system/test/test-report-html.scm | 34 ++++++++++++++++++++++
 2 files changed, 39 insertions(+), 14 deletions(-)