Security update for cacti, cacti-spine

This update for cacti, cacti-spine fixes the following issues: - cacti 1.2.13: * Query XSS vulnerabilities require vendor package update (CVE-2020-11022 / CVE-2020-11023) * Lack of escaping on some pages can lead to XSS exposure * Update PHPMailer to 6.1.6 (CVE-2020-13625) * SQL Injection vulnerability due to input validation failure when editing colors (CVE-2020-14295, boo#1173090) * Lack of escaping on template import can lead to XSS exposure - switch from cron to systemd timers (boo#1115436): + cacti-cron.timer + cacti-cron.service - avoid potential root escalation on systems with fs.protected_hardlinks=0 (boo#1154087): handle directory permissions in file section instead of using chown during post installation - rewrote apache configuration to get rid of .htaccess files and explicitely disable directory permissions per default (only allow a limited, well-known set of directories)