You can now toggle showing only cleared items in the accounts and
register screens, with C (like the command-line flag).
The f key has been changed to F for consistency (we don't have this as a
command-line flag, though we could, though Ledger uses it for something
different).
Screen titles have been tweaked, eg switching the cyan and yellow.
Screen help has been squeezed to fit better in 80 columns.
