Typeahead skips two entries when pressing up/down on Firefox

Created by: stanislawosinski

This is probably caused by an inverted condition:

  this.suppressKeyPressRepeat = !~$.inArray(e.keyCode, [40,38,9,13,27])

should be

  this.suppressKeyPressRepeat = !!~$.inArray(e.keyCode, [40,38,9,13,27])