gnucash-docs maint: Add Preference Online Quotes

[Frank H.Ellenberger]

Updated	 via  https://github.com/Gnucash/gnucash-docs/commit/8460176d (commit)
	from  https://github.com/Gnucash/gnucash-docs/commit/0becd345 (commit)



commit 8460176de7a1bca31658603612a5b6d8cff7e8ba
Author: fell <frank.h.ellenberger at gmail.com>
Date:   Sat Feb 3 22:25:46 2018 +0100

    Add Preference Online Quotes
    
    continuation of commit d983ad9 and 21431e0



Summary of changes:
 help/C/Help_ch_Customize.xml        |  49 ++++++++++++++++++++++++++++++++++++
 help/C/Help_tips-appendix.xml       |   2 +-
 help/C/figures/Help_Pref_Quotes.png | Bin 0 -> 32979 bytes
 3 files changed, 50 insertions(+), 1 deletion(-)
 create mode 100644 help/C/figures/Help_Pref_Quotes.png