Slight rounding issues previously meant some files were updated but
not actually changed. Increase the no of decimals in the existing and
future pixels per centimeter from 1 to 2 and check for a difference of
more than 0.02 pixels per centimeter before running convert on a file.

Included in this commit are images that have not been previously
updated by adjust-dpi.sh.

Preferences tabs are in alphabetical order,
Add Import tab after General - this is now the General (was Generic
Importer) & Qif Import sections from Online Banking
Date/Time tab is now Numbers, Date, Time - Numbers is moved from General
 add "Force Prices to display as decimals"
Register, Reconciling: Remove Automatic interest transfer
Scheduled Transactions, Since Last Run:
 add "Review created transactions"
Windows, Tabs: add "Open new tabs adjacent to current tab"

messages when building help pdf. The problem is when linking to an id
defined in a title tag.
1. destination "trans-match-col" in Help_ch_Transactions.xml:
  Html: clicking the link incorrectly takes you to the start of the
  enclosing sect1 tag
  Pdf: link not created
2. destination "report-common.title" in Help_ch_Reports.xml:
  Html: link works
  Pdf: link not created
The fix is to move the id's from the title tag to the previous sectx
tag. This was simple in Help_ch_Reports.xml as there was already an
enclosing sectx tag but in Help_ch_Transactions.xml new sect's had to be
created and this involved much indenting. No content is changed in this
commit.
After the fix, the links work correctly in both html + pdf.