Add line for people using docker commands instead of docker-compose

Close #264. Username and IP address is logged on successful authentication

Improved error logging, now it won't show a generic error message in some situations.
Removed delete device, which is not needed as it will be overwritten later.
Logged more info when an error occurs saving a device.
Added orgmanager to JWT claims.

Implemented proper logging, with support for file logging, timestamp and syslog (this last one is untested)

Fail2Ban Setup & Walkthrough