gnucash-docs master: Multiple changes pushed

[Frank H.Ellenberger]

Updated	 via  https://github.com/Gnucash/gnucash-docs/commit/81f3711e (commit)
	 via  https://github.com/Gnucash/gnucash-docs/commit/82e9e764 (commit)
	 via  https://github.com/Gnucash/gnucash-docs/commit/4fc4b744 (commit)
	 via  https://github.com/Gnucash/gnucash-docs/commit/08581dcf (commit)
	 via  https://github.com/Gnucash/gnucash-docs/commit/1e5191f5 (commit)
	 via  https://github.com/Gnucash/gnucash-docs/commit/3137da6f (commit)
	 via  https://github.com/Gnucash/gnucash-docs/commit/2b81a73c (commit)
	from  https://github.com/Gnucash/gnucash-docs/commit/4bddb820 (commit)



commit 81f3711e13ad06dd196683555bc12a39b7f3e717
Merge: 4bddb82 82e9e76
Author: Frank H. Ellenberger <frank.h.ellenberger at gmail.com>
Date:   Sun May 17 08:12:17 2020 +0200

    Merge branch 'maint'

commit 82e9e76413f13210add203328f0d4aef4799bc70
Merge: 08581dc 4fc4b74
Author: Frank H. Ellenberger <frank.h.ellenberger at gmail.com>
Date:   Sun May 17 08:06:37 2020 +0200

    Merge PR #137 into maint

commit 4fc4b744fd15b1391eb7b5434a92e6e28003839c
Author: David Cousens <davidcousens at bigpond.com>
Date:   Wed Apr 29 08:33:16 2020 +1000

    Minor Correction to Help Manual
    
    Correct reconciliation action on U+C entry in table from 'n' to 'c'
    Modification of PR #137

commit 08581dcf82420067302a41b84559fb38b5b9caf5
Author: Frank H. Ellenberger <frank.h.ellenberger at gmail.com>
Date:   Sun May 17 05:33:58 2020 +0200

    Improve links to Selingers tutorials
    
    Use entities, also for titles

commit 1e5191f51f370b701fa4c2407a639d348b48206c
Author: Frank H. Ellenberger <frank.h.ellenberger at gmail.com>
Date:   Sun May 17 01:36:42 2020 +0200

    Minor fixes from the PR #138 discussion
    
    https://github.com/Gnucash/gnucash-docs/pull/138

commit 3137da6f9aae749d0851e13786da994a1cde43a8
Author: David Cousens <davidcousens at bigpond.com>
Date:   Sat May 9 12:42:40 2020 +1000

    Modifications to Guide Ch12 to include multi-currency transactions using trading accounts.
    
    Split the multi-currency transaction after the initial introduction into two sections. The first is the original dealing with the treatment of multicurrency transactions using manual recording of the gains and losses.  The second new section deals with gains and loss treatment using trading accounts. basic introduction to trading account concepts added and an example of a transfer of funds between accounts in different currencies is added (incomplete)
    Complete currency trading example
    
    
    typo and tag fixes
    
    
    typo and tag fixes
    
    
    tag and typo fixes
    
    
    type and tag fixes
    
    
    Updates to screenshots
    
    
    Fix up screenshots
    
    
    fix tags
    
    
    changes after proof reading
    
    
    tag mismatch fix
    
    
    Proof reading edits
    
    
    typo fix

commit 2b81a73c939bf286bcf9d89a420da33d1b5bdff5
Author: Frank H. Ellenberger <frank.h.ellenberger at gmail.com>
Date:   Thu Aug 8 06:54:14 2019 +0200

    Minor imrovements on Invoice ID
    
    Unification of lists



Summary of changes:
 docbook/gnc-docbookx.dtd                           |    2 +
 guide/C/ch_currency.xml                            | 1685 ++++++++++++--------
 .../currency_trading_Price_Database_initial.png    |  Bin 0 -> 24169 bytes
 guide/C/figures/currency_trading_acct_setup.png    |  Bin 0 -> 43068 bytes
 guide/C/figures/currency_trading_acct_setup_2.png  |  Bin 0 -> 46005 bytes
 .../C/figures/currency_trading_accts_after_tfr.png |  Bin 0 -> 67385 bytes
 .../currency_trading_accts_after_trf_back.png      |  Bin 0 -> 64755 bytes
 guide/C/figures/currency_trading_balance_sheet.png |  Bin 0 -> 74115 bytes
 .../currency_trading_prices_after_trf_back.png     |  Bin 0 -> 28993 bytes
 .../C/figures/currency_trading_transfer_funds.png  |  Bin 0 -> 43137 bytes
 .../C/figures/currency_trading_transfer_trans1.png |  Bin 0 -> 56718 bytes
 .../C/figures/currency_trading_transfer_trans2.png |  Bin 0 -> 63095 bytes
 guide/C/figures/currency_trading_trf_back.png      |  Bin 0 -> 62770 bytes
 help/C/Help_ch_Business.xml                        |   26 +-
 help/C/Help_ch_Customize.xml                       |    4 +-
 help/C/Help_ch_Transactions.xml                    |    2 +-
 16 files changed, 1033 insertions(+), 686 deletions(-)
 create mode 100644 guide/C/figures/currency_trading_Price_Database_initial.png
 create mode 100644 guide/C/figures/currency_trading_acct_setup.png
 create mode 100644 guide/C/figures/currency_trading_acct_setup_2.png
 create mode 100644 guide/C/figures/currency_trading_accts_after_tfr.png
 create mode 100644 guide/C/figures/currency_trading_accts_after_trf_back.png
 create mode 100644 guide/C/figures/currency_trading_balance_sheet.png
 create mode 100644 guide/C/figures/currency_trading_prices_after_trf_back.png
 create mode 100644 guide/C/figures/currency_trading_transfer_funds.png
 create mode 100644 guide/C/figures/currency_trading_transfer_trans1.png
 create mode 100644 guide/C/figures/currency_trading_transfer_trans2.png
 create mode 100644 guide/C/figures/currency_trading_trf_back.png