added new logo

Signed-off-by: Wang Bin <wangbin.zibo@gmail.com>
tweaked doc detail layout

Signed-off-by: Wang Bin <wangbin.zibo@gmail.com>
tweaked profile layout

Signed-off-by: Wang Bin <wangbin.zibo@gmail.com>
tweaked doc list layout

Signed-off-by: Wang Bin <wangbin.zibo@gmail.com>