LDAP: info string improved
LDAP: when ldaps and tls are configured, disable the latter one - they do not work together. ldaps already creates a secure connection.
LDAP: better detect timeouts. do not try to reconnect. do not try to bind when connection failed. makes ownCloud more responsive, esp. with multiple server connections configured
Typo
Merge pull request #1524 from owncloud/fix_ldaps_tls_setting

LDAP: don't try to put TLS on top of already secure connection (will fail).