[r23603]Bug 700656 - Tutorial does not explain type of security

git-svn-id: svn+ssh://svn.gnucash.org/repo/gnucash-docs/branches/2.4@23604 57a11ea4-9604-0410-9ed3-97b8803252fd
[r23601]Bug 693493 - Add text to Tutorial 2.2.3 to explain Debit/Credit Columns in register

Patch by David T.

git-svn-id: svn+ssh://svn.gnucash.org/repo/gnucash-docs/branches/2.4@23605 57a11ea4-9604-0410-9ed3-97b8803252fd