gnucash-docs maint: Document price input, editing, and storage.

[John Ralls]

Updated	 via  https://github.com/Gnucash/gnucash-docs/commit/fbb56932 (commit)
	from  https://github.com/Gnucash/gnucash-docs/commit/4ef90cbf (commit)



commit fbb5693200048fae6925d4f9c0c116d4dcd4dd36
Author: John Ralls <jralls at ceridwen.us>
Date:   Tue Sep 15 16:02:22 2015 -0700

    Document price input, editing, and storage.



Summary of changes:
 help/C/Help_ch_Tools_Assistants.xml |  108 ++-
 help/C/Help_ch_Transactions.xml     | 1370 ++++++++++++++++++-----------------
 2 files changed, 794 insertions(+), 684 deletions(-)