Final part of https://issues.apache.org/bugzilla/show_bug.cgi?id=55383 for Tomcat 8
Improve markup and design of Tomcat's HTML pages
Patch by Konstantin Preißer

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1520323 13f79535-47bb-0310-9956-ffa450edef68