调整电源管理界面的布局。

Log: 优化电源管理界面的布局。
Bug: https://pms.uniontech.com/zentao/bug-view-48470.html
Change-Id: I073be42b4b8304acda2858dc63671399cc1a3238
Reviewed-on: http://gerrit.uniontech.com/c/dde-control-center/+/5548
Reviewed-by: <mailman@uniontech.com>
Reviewed-by: fanpengcheng <fanpengcheng@uniontech.com>
Reviewed-by: niecheng <niecheng@uniontech.com>
Tested-by: <mailman@uniontech.com>