Add missing logo

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1463319 13f79535-47bb-0310-9956-ffa450edef68
HBASE-8238 xref docs missing from site gen

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1463321 13f79535-47bb-0310-9956-ffa450edef68
HBASE-7904 Revert, due to concern over coprocessor exposure



git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1463326 13f79535-47bb-0310-9956-ffa450edef68