add '목록' button that back to post_list on view_post
add '목록' button that back to post_list on view_post

cjh5414/kboard,hyesun03/k-board,hyesun03/k-board,kboard/kboard,guswnsxodlf/k-board,guswnsxodlf/k-board,cjh5414/kboard,kboard/kboard,darjeeling/k-board,hyesun03/k-board,cjh5414/kboard,kboard/kboard,guswnsxodlf/k-board