Merge branch 'hotfix/invalid_link_for_post' into develop
change layouts for category_index page.
Add post for weird offset on IE9
add atom feed for categories.
remove unused files and folders.
add rss on each pages.
change copyrights
Merge branch 'feature/twitter-bootstrap-2.3' into develop
Merge branch 'feature/posts-from_naver' into develop
Merge branch 'release/0.3.01' into source