This allows matching accounting entries that were on the wrong account but the
partners of which have been modified later on.

* No accounting entry search when no accounts/partners (otherwise attempts to
  fetch every entry in the DB).
* Sync filters between account type / account / partners.

reconciliation, for these contain errors.
Updated the translations.

the account consultation wizard.
Updated the translations.

It used to only be applied onto from / to period filters previously.

(optional)

This eases overrides by other addons.

Don't always clear the account out to play better with other addons that may
set both "account" & "account type" fields at once.

- More flexible from-to selectors.
- The period filter is now a from-to selector.
- Always preview matching references.
- Add a matched reference count.