* docs - update bloat best practices

information from dev.
--Remove copying or redistributing table data as alternatives to VACUUM FULL
--Mention that VACUUM (without FULL) maintenance is for both heap and AO tables.

Also
Reorganized information.
Clarified ACCESS EXCLUSIVE lock is reason users cannot access table during VACUUM FULL

* docs - updates based on review comments.

* docs - removed warning about stopping VACUUM FULL.

* docs - fixing bloat - add note about performing reindex on system tables.

* docs - fixing bloat - note about reindex - review comment updates

* docs - update system catalog maintenance information.

--Updated Admin. Guide and Best Practices for running REINDEX, VACUUM, and ANALYZE
--Added note to REINDEX reference about running ANALYZE after REINDEX.

* docs - edits for system catalog maintenance updates

* docs - update recommendation for running vacuum and analyze.

Update based on dev input.

* adding source for best practices doc

* removing pivotal copyright

* adding missing graphics files