[ci skip]

removing duplicated hadoop compatibility table; clarifying that some hadoop versions no longer supported (#2075)

* docs: fix broken links and permanent redirects

* fix doubled slashes in URLs

* GPDB DOCS - Remove error table logging information.

* resolve conflict updated feature summary

[ci skip]

* adding graphics directory for adminguide

* updating source to use local /graphics dir

* adding missing graphics

* adding ditamap for client docs; removing some extraneous landing pages; adding local graphics

* updating adminguide source with most recent 4.3.x work

* updating reference manual with most recent 4.3.x work

* updating utility guide with most recent 4.3.x changes

* updating client tools guide with most recent 4.3.x changes

* adding new file for client tools

* updating map files with most recent 4.3.x changes

* updating map files with most recent 4.3.x changes

* Revert "updating map files with most recent 4.3.x changes"

This reverts commit d7570343c17a126b4d11eaee3870ad6daa36966f.

* Revert "updating map files with most recent 4.3.x changes"

This reverts commit d7570343c17a126b4d11eaee3870ad6daa36966f.

* updating ditamaps with latest 4.3.x changes

* updating ditamaps with latest 4.3.x changes