- Removed constants LDAP_NO_USER_DN and LDAP_TOO_MANY_USER_DN from config/constants.php
- Added config entry timeout to config/ldap.php
- Changed private method libraries/AuthLib->_checkLDAPAuthentication
to use libraries/AuthLDAPLib->checkUsernamePassword
- Changed AuthLDAPLib to have only one public method called checkUsernamePassword that makes use of the other private methods to check if a username and password are valid on many LDAP servers