This commit introduces a fix for wrongly inserted email addresses that have a memid=0 field because of MariaDBs strict mode that was enabled after moving from MySQL to MariaDB. Fixes https://bugs.cacert.org/view.php?id=1543
"Review the code regarding the new point calculation in ./scripts/cron/removedead.php"
"Record the CCA acception for the account creation"
Provide a possibility to regularly review the permissions in the system.