add favicon
临时去掉分类页面的.html后缀
file mode changes
Revert "add favicon"

This reverts commit dbd0175092cda5e0c05fe6771e3fbb8567c4cb17.
Revert "file mode changes"

This reverts commit ab4b9de8cbd5dcb9162c9983d6950893d5ed3b4c.
Revert "临时去掉分类页面的.html后缀"

This reverts commit b46396b5fb0bf7e8fbd4b2ca362caa55e9d3ae7d.