Fix https://issues.apache.org/bugzilla/show_bug.cgi?id=56383
Review of r1589994:
- Reduce visibility of fields that have getter methods
- Do not print <h3></h3> line if showServerInfo is turned off

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1590422 13f79535-47bb-0310-9956-ffa450edef68
Fix https://issues.apache.org/bugzilla/show_bug.cgi?id=56383
Use non-empty title when both showServerInfo and showReport are false.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1590438 13f79535-47bb-0310-9956-ffa450edef68
Fix https://issues.apache.org/bugzilla/show_bug.cgi?id=56383
Document the new feature on the "security HowTO" page.
Move error valve documentation lower in the valves list
(access log valves and access control valves should be the first ones there).

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1590451 13f79535-47bb-0310-9956-ffa450edef68
Improving valves documentation.
Wrap Access Logging valves into a distinct section.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1590461 13f79535-47bb-0310-9956-ffa450edef68
Improving valves documentation.
Wrap RemoteAddrValve and RemoteHostValve valves into a distinct section.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1590471 13f79535-47bb-0310-9956-ffa450edef68
Improving valves documentation.
Move RemoteIpValve and SSLValve into new section "Proxies Support".

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1590474 13f79535-47bb-0310-9956-ffa450edef68
Improving valves documentation.
Move valves implementing an Authenticator into new section "Authentication".

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1590479 13f79535-47bb-0310-9956-ffa450edef68
Fix broken link. I noted it when backporting r1519668 to TC7.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1590500 13f79535-47bb-0310-9956-ffa450edef68