Author: Christian Stimming <[hidden email]>
Date: Tue Jan 1 13:27:00 2019 +0100
Speed-up of txn match dialog: Suspend GUI refresh during deletion of selected lines.
This gives a significant speed-up when selecting multiple lines for deletion.
Otherwise the full GUI refresh would be run for each single selected
line, which sucks if the accounts and register windows contain a lot
of txns. Better do that once after we are finished with all line deletions.