CTR Docs update
Fix https://issues.apache.org/bugzilla/show_bug.cgi?id=57348
Remove references to DIGEST auth config attributes from BASIC auth docs.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/tc6.0.x/trunk@1645450 13f79535-47bb-0310-9956-ffa450edef68
proposal

git-svn-id: https://svn.apache.org/repos/asf/tomcat/tc6.0.x/trunk@1645467 13f79535-47bb-0310-9956-ffa450edef68