New csf v6.38

Changes:

• Parameterise calls to system and Open3 where possible
• HTTP::Tiny upgraded to v0.039
• Modifications to csftest.pl
• Removed the UI “Pre-configured settings for Low, Medium or High” as they are outdated and meaningless. Users should go through the csf configuration and setup the firewall for their individual server needs
• Translate ampersand for HTML output
• Modified csf.blocklist for new installations to use the SSL URL for the TOR exit list now that they have forced redirection from the non-SSL URL, with a note to change URLGET to use LWP
• Modified csf.blocklist for new installations to specify an alternative TOR exit node list