Correction of a big bug in cron line (confusion between minutes and hours) for database update. Fixed another bug that was disturbing navigation when comin from viruses search to spams search. Task #220 (In Database updates screen it doesn't show database version) should be ok now. Task #219 (Global settings for freshclam.conf only allows one entry for DatabaseMirror variable) should be ok now. Task #192 (Database Updates/Automatic Updates) should be ok now. Task #207 (When not using amavis, quarantine viewer doesn't work) should be ok now. Added a ACL to start/stop clamav daemon.