* Preliminary update to numbering and supported functions

* Screenshots for pgAdmin4

* New pgAdmin files and updates

* Fix typo in ditamap

* Resize graphics

* Move graphics to correct level graphics directory, update refs

* Add queryscreen

* Misc reorganization, add Viewing DDL file, map entry.

* Change spurious .dita postfix to .xml

* Specify what is not supported, add additional query content.

* Updates from pull request review

* Updates from Shirley Wang

* Removing sections for unsupported features

* Remove pgAdmin III pages, add link to website.