Add an option in User Directory settings to make an SSL LDAP connection but without verifying that the hostname and certificate match

Starting JIRA 5.1, the embedded crowd has been upgraded from version 2.3.2 to 2.4. This includes the security fix CWD-2690 won't be visible to public that has been announced in Crowd 2.3.6 release notes - Crowd 2.3.6 Release...