Medowar/manager: Server part for update and backup management

Medowar f62663ef10 removed references to psa project #2		1 月之前
..
backup.php	90e0d37438 initial commit	1 月之前
heartbeat.php	90e0d37438 initial commit	1 月之前
manifest.php	f62663ef10 removed references to psa project #2	1 月之前
package.php	90e0d37438 initial commit	1 月之前