필요없는 페이지 삭제
cornerstone lib 재설치 및 코드 수정
Merge branch 'origin/dev-2.0'
livedoc 반응형 관련 스타일 조정
Merge branch 'dev-2.0' of https://dev.cornerstone.sktelecom.com/cornerstone_framework into dev-2.0
BTS 3.0 Submodule 업데이트
Merge branch 'dev-2.0' of https://dev.cornerstone.sktelecom.com/azamara/cornerstone_framework into dev-2.0
Merge branch 'dev-2.0' of https://dev.cornerstone.sktelecom.com/azamara/cornerstone_framework into dev-2.0