Fix for whitespace-only searches (#2062)
Fix for whitespace-only searches (#2062)

ofer43211/unisubs,norayr/unisubs,norayr/unisubs,wevoice/wesub,ReachingOut/unisubs,ReachingOut/unisubs,norayr/unisubs,eloquence/unisubs,wevoice/wesub,eloquence/unisubs,wevoice/wesub,ReachingOut/unisubs,pculture/unisubs,pculture/unisubs,pculture/unisubs,wevoice/wesub,pculture/unisubs,norayr/unisubs,ofer43211/unisubs,ReachingOut/unisubs,eloquence/unisubs,eloquence/unisubs,ofer43211/unisubs,ofer43211/unisubs