区分 2013 迎新
Merge branch 'production'
Revert "Update skeleton.html"

This reverts commit d61cc1bb4de8560d254c9a3645951ca7268ba10c.
Revert "Update skeleton.html"

This reverts commit 9a4a1f4e720be38003ec8fbfa16e29d293c7f087.
Revert "Update common.css"

This reverts commit 404457afd8778e9f554315780795ed25277852b5.
Revert "给logo 加超链接"

This reverts commit 50f778b53b82b84a8434edb65e3811df1399d245.
Merge branch 'master' into production