Log file improvements

[fugasjunior]

Split log files (i.e. by size, by date, ...) to avoid creating several hundred megabytes worth of logs. Automatically delete older logs. Retention time is to be configured in the UI.

[FyWolf]

I do agree with that, I had to go through a 5Gb 122 millions lines long log, wasn't really practical, if we could divide at least each time the server was booted into a new log files, it would be a great improvement