Fix Authors of manual
Fix crossrefs in footnotes
Fix Security Header's link to HttpServletResponse.setHeader
Polish guide
SEC-2281: Document Java Configuration
SEC-2365: registerAuthentication->configure
Shis simplifies the class hieararchy significantly.EC-2366: Extract AbstractRequestMatcherRegistry from AbstractRequestMatcherConfigurer

This simplifies the class hierarchy significantly.
SEC-2368: DebugFilter outputs headers and HTTP method
SEC-2369: PreAuthenticatedGrantedAuthoritiesUserDetailsService fix case to createUserDetails method
SEC-2094: Document Concurrency Support
SEC-2299: Document Web MVC integration