Auditing

Implemented auditing of all objects except import logs and the audit trail!
Logs 'AO:name' for action officer tokenised updates and 'SideKiq' for cron job imports
This won't work as this will always evaluate as `true`. If we set `PAPER_TRAIL_ENABLED=false`, this will actually result as `true`. It should probably be:

```ruby
PaperTrail.enabled = (ENV['PAPER_TRAIL_ENABLED'] == '1' || ENV['PAPER_TRAIL_ENABLED'] == 'true') || false
```

And I would also not commit commented `binding.pry` :-)