Install error - ufw

[Olgoonik-IT]

Reporting an install bug on current version. Install script doesn't check to see if UFW is not already installed before it attempts to diable it. If not installed , the script reports it's unable to disable ufw and exits with that error. Installed UFW to verify and it then worked with a fresh install.

[girish]

@Olgoonik-IT thanks for reporting, I have fixed this now.