bbatsov/prelude — pull request #741 by tuhdo (2014-11-14 08:40:02+00:00)
Title: Disable helm-quick-update

It is not needed anymore since helm-candidate-number-limit is
small (less than several thousands). If this is the case, then there's
no difference between quick update and no quick update execution time.
Enabling helm-quick-update makes helm buffer flashing for every entered
character to retrieve new candidate list, which would annoy user.