7b137aced [Qt] Add delay before filtering transactions Fixes 3141 (Lucas Betschart)
Pull request description:
As discussed in https://github.com/bitcoin/bitcoin/issues/3141. This adds a QTimer pause of 200ms before start to filter so it should be possible to filter big data sets easier.
Tree-SHA512: ee599367794eac2c5b8bc7ecac47f44295e40c0ff543ff2f2c4860590f917b59b1cfb273fa564e6eb4c44016c0ef412d49f1a8f1b36b07e034022f51bb76653c
Backport of Core PR11015
https://github.com/bitcoin/bitcoin/pull/11015/