Log user actions

[Abyss777]

Here is implementation of logging user actions:

• Object create/edit/remove
• Objects link/unlink
• User login/logout
• Reset device total distance

Made it non-switchable, only with global log. I do not think log size will grow dramatically in comparing with device communications debug.

Example:

2017-12-13 14:48:21  INFO: User: 1, Action: login
2017-12-13 12:05:53  INFO: User: 1, Action: edit, Object: User, Id: 18
2017-12-13 12:06:27  INFO: User: 1, Action: link, Owner: User, Id: 18, Property: Group, Id: 11
2017-12-13 12:06:28  INFO: User: 1, Action: link, Owner: User, Id: 18, Property: Group, Id: 5
2017-12-13 12:06:30  INFO: User: 1, Action: unlink, Owner: User, Id: 18, Property: Group, Id: 11
2017-12-13 14:48:23  INFO: User: 1, Action: logout
2017-12-13 14:48:21  INFO: User: 2, Action: login
2017-12-13 12:07:29  INFO: User: 2, Action: create, Object: Device, Id: 52
2017-12-13 12:07:29  INFO: User: 2, Action: link, Owner: User, Id: 2, Property: Device, Id: 52
2017-12-13 12:16:13  INFO: User: 2, Action: remove, Object: Device, Id: 52
2017-12-13 14:48:21  INFO: User: 2, Action: login
2017-12-13 14:48:23  INFO: User: 2, Action: logout
2017-12-18 16:40:11  INFO: User: 1, Action: login
2017-12-18 16:40:34  INFO: User: 1, Action: resetTotalDistance, DeviceId: 8

fix #3528

[tananaev]

I think it would be better to use low-case words everywhere. It will make it consistent with location info logging.

[Abyss777]

Should I also "toLowerCase" class names or it is OK?

2017-12-19 12:13:33  INFO: user: 1, action: login
2017-12-19 12:13:45  INFO: user: 1, action: edit, object: Device, id: 36
2017-12-19 12:13:59  INFO: user: 1, action: edit, object: Server, id: 1
2017-12-19 12:14:32  INFO: user: 1, action: link, owner: Device, id: 36, property: Geofence, id: 5

[tananaev]

I think classnames are fine. Or maybe we can make them lower-camel-case for consistency.

[Abyss777]

Done

2017-12-19 12:35:49  INFO: user: 1, action: edit, object: server, id: 1
2017-12-19 12:35:59  INFO: user: 1, action: edit, object: device, id: 7
2017-12-19 12:36:12  INFO: user: 1, action: link, owner: device, id: 7, property: geofence, id: 5
2017-12-19 12:36:14  INFO: user: 1, action: link, owner: device, id: 7, property: geofence, id: 6
2017-12-19 12:36:15  INFO: user: 1, action: unlink, owner: device, id: 7, property: geofence, id: 5

[tananaev]

Merged, thanks.