Fix a notice

Signed-off-by: Takashiro <takashiro@qq.com>
Sign my name (&_&)

Signed-off-by: Takashiro <takashiro@qq.com>
Well, I don't really know if it's fixed. Cookies expire unexpectedly

Signed-off-by: Takashiro <takashiro@qq.com>
Add a new page for administrators to customize unit

Signed-off-by: Takashiro <takashiro@qq.com>