Account Tracker / Hill Lists / Meter Readings

Added support for setting the meter conversion factor as part of a rate change. This is mainly for gas meters, e.g. where your meter units change from ft3 to m3. Adding a rate change on the day your meter changes lets you use a different conversion factor for each unit.

If your meter uses a single counter/reading, the most recent reading is now displayed on the Meters screen. This is useful when submitting readings to your supplier.

Minor bug fixes.

Upgraded to version 15.2 of the Database of British and Irish Hills (DoBIH).

Added the 32 London Borough tops.

Minor bug fixes.