- Be consistent with the case used for uniqueMember.

- Be consistent with the case used for AuthLDAPURL. Use uppercase URL, as in the code in order to fix syntax highlight issues.
- Fix the case of AuthLDAPSubGroupAttribute in <default>, so that quickreference.xsl works as expected

Fix some other small layout issues.

(r1853664 in trunk)

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1853665 13f79535-47bb-0310-9956-ffa450edef68