typeahead: Allow zero as number of items.
typeahead: Allow zero as number of items.

Limseunghwan/oss,doortts/forked-for-history,bloodybear/yona,Limseunghwan/oss,violetag/demo,violetag/demo,ahb0327/yobi,brainagenet/yobi,yona-projects/yona,doortts/forked-for-history,bloodybear/yona,doortts/fork-yobi,doortts/fork-yobi,ihoneymon/yobi,oolso/yobi,Limseunghwan/oss,ihoneymon/yobi,yona-projects/yona,yona-projects/yona,ChangsungKim/TestRepository01,oolso/yobi,oolso/yobi,ihoneymon/yobi,doortts/fork-yobi,yona-projects/yona,naver/yobi,naver/yobi,naver/yobi,doortts/forked-for-history,brainagenet/yobi,bloodybear/yona,bloodybear/yona,brainagenet/yobi,ahb0327/yobi,ahb0327/yobi,ChangsungKim/TestRepository01,doortts/fork-yobi