Header: add new group button and change add button style
Header: add new group button and change add button style

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