When you perform a conscious update (with administration user interface) from Piwigo 13.7.0 to 13.8.0 an activity is registered:

```
pwg_activity(
  'system',
  ACTIVITY_SYSTEM_CORE,
  'update',
  array('from_version'=>PHPWG_VERSION, 'to_version'=>$upgrade_to)
);
```

Unfortunately, if you perform a manual update (by overwriting files on the server), Piwigo won't register the date of the update. Let's mark it as an `autoupdate` (just like we have for plugins).
track core autoupdates in system activities
This is a GitHub Issue
repo:Piwigo
owner:Piwigo
Title : track core autoupdates in system activities
Issue date:

--- start body ---
When you perform a conscious update (with administration user interface) from Piwigo 13.7.0 to 13.8.0 an activity is registered:

```
pwg_activity(
  'system',
  ACTIVITY_SYSTEM_CORE,
  'update',
  array('from_version'=>PHPWG_VERSION, 'to_version'=>$upgrade_to)
);
```

Unfortunately, if you perform a manual update (by overwriting files on the server), Piwigo won't register the date of the update. Let's mark it as an `autoupdate` (just like we have for plugins).
--- end body ---
