gnucash-docs master: Multiple changes pushed

[Frank H.Ellenberger]

Updated	 via  https://github.com/Gnucash/gnucash-docs/commit/4b85e45a (commit)
	 via  https://github.com/Gnucash/gnucash-docs/commit/f1e2ea73 (commit)
	 via  https://github.com/Gnucash/gnucash-docs/commit/30d6b14d (commit)
	from  https://github.com/Gnucash/gnucash-docs/commit/6671ed2a (commit)



commit 4b85e45a8e3e4241b2b7bdac7d8ccdd2ca636c36
Merge: 6671ed2 f1e2ea7
Author: Frank H. Ellenberger <frank.h.ellenberger at gmail.com>
Date:   Thu Sep 26 13:58:37 2019 +0200

    Merge branch 'maint'

commit f1e2ea732bcad196051888f5eb21f3d1c0a32b7b
Author: Frank H. Ellenberger <frank.h.ellenberger at gmail.com>
Date:   Thu Sep 26 13:53:22 2019 +0200

    Use entities for yahoo links

commit 30d6b14d966dad7b4c8920b7703247e874d8cc3f
Author: Frank H. Ellenberger <frank.h.ellenberger at gmail.com>
Date:   Thu Sep 26 11:36:45 2019 +0200

    Use entity for aphavantage URL and improve grouping of entities



Summary of changes:
 docbook/gnc-docbookx.dtd       |   18 +-
 guide/it/it.po                 |    8 +-
 guide/ja/ch_currency.xml       |    4 +-
 guide/pt/ch_currency.xml       |    4 +-
 help/C/Help_ch_Customize.xml   |    5 +-
 help/C/Help_tips-appendix.xml  |   24 +-
 help/de/Help_tips-appendix.xml | 7949 ++++++++++++++++++++--------------------
 help/it/gnucash-help.xml       |    4 +-
 help/pt/Help_tips-appendix.xml |    2 +-
 9 files changed, 4029 insertions(+), 3989 deletions(-)