Changed: MASTER_GROUP parameter become IMSCP_GROUP
Changed: Both Chkrootkit and Rkhunter anti-rootkits as now provided as addons
Fixed #636: Bug - Rkhunter - Unreadable log file
Fixed: Apache logrotate conffile shouldn't know about awstats addon
Removed: Cron templates
Removed: Packages awstats, chkrootkit and rkhunter from global packages file
Updated: ispCP migration script
Updated: Preseed template file
Refactoring + several fixes + typo