Restructure doc sections about statistics views
Restructure doc sections about statistics views

Break out the "dynamic statistics" views in the table from the
"collected statistics" ones. Could do with some more refactoring,
but this is a start.

techdragon/Postgres-XL,lisakowen/gpdb,zeroae/postgres-xl,greenplum-db/gpdb,50wu/gpdb,ashwinstar/gpdb,Postgres-XL/Postgres-XL,Postgres-XL/Postgres-XL,ashwinstar/gpdb,adam8157/gpdb,lisakowen/gpdb,ovr/postgres-xl,pavanvd/postgres-xl,zeroae/postgres-xl,greenplum-db/gpdb,adam8157/gpdb,ashwinstar/gpdb,xinzweb/gpdb,jmcatamney/gpdb,yazun/postgres-xl,ashwinstar/gpdb,Postgres-XL/Postgres-XL,lisakowen/gpdb,adam8157/gpdb,zeroae/postgres-xl,xinzweb/gpdb,adam8157/gpdb,oberstet/postgres-xl,50wu/gpdb,ashwinstar/gpdb,xinzweb/gpdb,xinzweb/gpdb,ovr/postgres-xl,xinzweb/gpdb,greenplum-db/gpdb,50wu/gpdb,techdragon/Postgres-XL,yazun/postgres-xl,greenplum-db/gpdb,techdragon/Postgres-XL,ashwinstar/gpdb,greenplum-db/gpdb,techdragon/Postgres-XL,lisakowen/gpdb,50wu/gpdb,ovr/postgres-xl,oberstet/postgres-xl,jmcatamney/gpdb,ovr/postgres-xl,xinzweb/gpdb,lisakowen/gpdb,adam8157/gpdb,jmcatamney/gpdb,Postgres-XL/Postgres-XL,yazun/postgres-xl,ashwinstar/gpdb,jmcatamney/gpdb,50wu/gpdb,techdragon/Postgres-XL,pavanvd/postgres-xl,oberstet/postgres-xl,jmcatamney/gpdb,adam8157/gpdb,greenplum-db/gpdb,Postgres-XL/Postgres-XL,50wu/gpdb,zeroae/postgres-xl,lisakowen/gpdb,adam8157/gpdb,adam8157/gpdb,zeroae/postgres-xl,oberstet/postgres-xl,ovr/postgres-xl,50wu/gpdb,yazun/postgres-xl,lisakowen/gpdb,jmcatamney/gpdb,jmcatamney/gpdb,pavanvd/postgres-xl,pavanvd/postgres-xl,greenplum-db/gpdb,yazun/postgres-xl,50wu/gpdb,xinzweb/gpdb,oberstet/postgres-xl,lisakowen/gpdb,ashwinstar/gpdb,xinzweb/gpdb,pavanvd/postgres-xl,greenplum-db/gpdb,jmcatamney/gpdb