Only do so if the last user action was enabling said operation,
otherwise things get confusing.
=> keep a separate 'active' value which is unset when an operation is
disabled
* move chart of accounts higher in document
* rewrite text a bit
* split controls to left-hand column
* remove dependencies between operations
* highlight result of last-applied operation (not very good looking atm)
After discussion with fp this probably isn't the direction (ish), but
want to checkpoint this in order to work on other stuff earlier in the
document, but not commit a single gigantic blob of stuff.