gnucash maint: Multiple changes pushed

[Christopher Lam]

Updated	 via  https://github.com/Gnucash/gnucash/commit/58be8f6b (commit)
	 via  https://github.com/Gnucash/gnucash/commit/039b8487 (commit)
	 via  https://github.com/Gnucash/gnucash/commit/72974d7a (commit)
	from  https://github.com/Gnucash/gnucash/commit/8ed15089 (commit)



commit 58be8f6baf3001b3a985aa13ea9882b4c6c9b129
Author: Christopher Lam <christopher.lck at gmail.com>
Date:   Mon Jun 3 23:21:21 2019 +0800

    Bug 797262 - Change "Today date format"
    
    Mark strftime format string translatable

commit 039b84871efae99a6296986f5783fc8293c6cce6
Author: Christopher Lam <christopher.lck at gmail.com>
Date:   Mon Jun 3 21:17:55 2019 +0800

    [utilities] warn against using guile's strftime
    
    strftime has been banished from code; warning for custom-reports
    
    https://www.mail-archive.com/bug-guile@gnu.org/msg09778.html

commit 72974d7a13349ebdc31b64adb2a35e1624bb41e1
Author: Christopher Lam <christopher.lck at gmail.com>
Date:   Wed Jun 19 21:09:37 2019 +0800

    [html-utilities] fix logic error in gnc:assign-colors
    
    Unfortunately 3b187a128 was written with logic error and should have
    been tested better.



Summary of changes:
 gnucash/report/business-reports/receipt.scm                    |  6 +++++-
 gnucash/report/report-system/html-utilities.scm                |  4 ++--
 .../report/report-system/test/test-html-utilities-srfi64.scm   |  9 +++++++++
 libgnucash/scm/utilities.scm                                   | 10 ++++++++++
 4 files changed, 26 insertions(+), 3 deletions(-)