Securitrons will only arrest unidentifiable persons when ID check is on

- Sec bots will check if the person is "Unknown" and without an ID if idcheck is on. This means beepsky will stop targetting people at the HoP line, or officers changing his settings. It's meant to target disguised people, as I had originally intended.
- However, sec bots, unable to identify monkeys, will start arresting them if idcheck is on
- Agent IDs buffed to reduce threat level by 5 instead of 2
Merge pull request #4703 from Ikarrus/beepboopiamthelaw

Securitrons will only arrest unidentifiable persons when ID check is on