*WARNING*: lightning support is a WIP due to an unresolved electrum
lightning history bug (see docker-finance #227).
This commit is needed for backwards compatibility, as the new electrum
format will break import - even if lightning is never used.
Removes potential interpretation of percent signs in various types of
descriptions/notes/labels (otherwise, import may break).
Resolves "fatal: not enough arguments to satisfy format string" under
certain conditions.
If electrum-provided prices aren't available, 'No Data' will be given.
Attempts to calculate this string will result in 0.00 for fiat values.
Do not attempt to calculate this string. Instead, leave the column empty
(for bitcoin.tax calculations).