gnucash-docs: New Branch '2.6.20'

[John Ralls]

        at  https://github.com/Gnucash/gnucash-docs/tree/a1b3925410f355bea143708df007f599f4875f3d (tag)
   tagging  561df8ded06d1c429d160808acfc91fef1002e59 (commit)
  replaces  2.6.19
 tagged by  John Ralls
        on  Sun Apr 1 14:25:20 2018 -0700


Tag Documentation 2.6.20

Geert Janssens (1):
      Revert "Fix remaining references to General Ledger as per David Carlson's suggestion"

John Ralls (2):
      Bug 792756 - Help Manual 8.10 incorrect link
      Release Documentation for GnuCash 2.6.20

fell (17):
      Add a note about sort order of tabs in preferences
      Add Preference Online Quotes
      Add note from bugzilla to ASX in appendix
      Add required F::Q version for Bug 770132 - Price editor does not find
      Add a link from '8.5.1. Loan Specifications' to '8.3. Calculations'
      Link the referenced 'Simple Transaction Example' in Transactions
      Bug 793844 - GnuCash Tutorial and Concepts Guide 13.4.5. Process Payment
      Improve screenshots of ch_bus_features:
      Cleanup of Improve screenshots of ch_bus_features:
      Update Help Tips to commit c0fd3b3, which was adjusted for
      Replace outdated online quote sources by link to Help Tips
      Bug 784638 - sect1 Help-Window in Help_ch_GettingHelp describes an
      Apple stopped calling MacOS 'Mac OS X' at 10.12
      German translation of changes in FQ appendix
      Minor improvements of FQ appendix
      Emphasise methods & fix a few typos in guide currency (de, en)
      minor fixes in guide de currency