Re-enabling certain ATC commands on TS

[MaximV]

ATC update [PFI & Check Help Pages]

After some discussion with a developer, it is confirmed that "PFI & Check Help Pages" commands were intentionally removed from those who control on the Training Server. Mainly due to the fact that these commands were being over used, abused, and were often misleading pilots. It has shown a degradation in their piloting abilities on the Expert Server after coming off the Training Server. Many pilots have begun to ignore instructions and have complete disregard for the rules. This results in an …