Polish
Polish javadoc formatting
Set correct github tag for generated docs
Add missing main.basedir property to docs pom
Port ViewResolver docs

Port documentation originally added in commit b56bd0a10c76
Port Add Maven example for Tomcat 8

Port Add Maven example for Tomcat 8 from markdown to asciidoc.
(originally from commit 15372cb73786d9a82abbd441b0c9e04a68967829)