Adding batch mode to output just one line of text (no colors) in order to be parsed by computer tools

Adding DESCRIPTION field in tests and [INFO] DESCRIPTION in main
Update README with --batch mode info
Add --batch mode in hardening.sh

Change summary to make it oneliner when batch mode
AUDIT_SUMMARY PASSED_CHECKS:95 RUN_CHECKS:191 TOTAL_CHECKS_AVAIL:191 CONFORMITY_PERCENTAGE:49.74

bin/hardening/8.1.8_record_login_logout.sh

@@ -12,6 +12,7 @@ set -e # One error, it's over
 set -u # One variable unset, it's over
 
 HARDENING_LEVEL=4
+DESCRIPTION="Collect login and logout events."
 
 AUDIT_PARAMS='-w /var/log/faillog -p wa -k logins
 -w /var/log/lastlog -p wa -k logins