-modify admin_comment
Merge pull request #39 from KimMinJeong/board_main_contents

Board main contents
-modify board_detail
Modify for Merge
-Modify delete button --> comfirm()delete button,
-Modify url_for(index) --> url_for(board_list)
-Add css
-Modify css,
-Delete is_admin() --> Use authority
-Add board button img
Merge branch 'master' of github.com:KimMinJeong/Collabo into board_main_contents
Merge pull request #40 from KimMinJeong/KMJ

Kmj
Merge branch 'master' of github.com:KimMinJeong/Collabo into board_main_contents
-Add identiry view,
Merge pull request #41 from KimMinJeong/KMJ

-Add identiry view,
-current_activation.html 추가
Merge branch 'master' of github.com:KimMinJeong/Collabo into board_main_contents
board_detail 색 `