Latest docs build for site.

This build was roughly:
 docker-compose build cassandra-website
 docker-compose run cassandra-website
 # lots of svn status & diff throughout
 sudo chown -R $USER: .  # docker build writes everything as root
 svn revert --recursive publish/blog/
 rm -r publish/blog/2018/08/06  # no blogs were harmed in this commit
 svn revert --recursive publish/doc/cql3
 rm -r publish/doc/3.11.5
 rm -r src/doc/3.11.5
 rm -r src/.sass-cache
 rm -r src/doc/4.0/_downloads/54214fb4f99d59730d4cda283a1e9a75/
 rm -r src/doc/4.0/_downloads/87a3a4aa5557ff2196758c8fe2aecc51/
 for f in `svn status |egrep '^!' |awk '{print $2}'`; do svn rm $f; done
 svn commit

 83k line diff. Sorry for that.



git-svn-id: http://svn.apache.org/repos/asf/cassandra/site@1861363 13f79535-47bb-0310-9956-ffa450edef68
839 files changed