OAK-301 : oak docu

Modularising query docs. Move Query docs to query folder

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/trunk@1636548 13f79535-47bb-0310-9956-ffa450edef68
OAK-301 : oak docu

Lucene property index documentation

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/trunk@1636549 13f79535-47bb-0310-9956-ffa450edef68