Initial changes to admin guide and some cleanup on getting started guide.

docs/administration-guide/01-managing-databases.md

docs/administration-guide/images/DatabaseConnection.png

docs/administration-guide/images/ProfileDropdown.png

docs/administration-guide/start.md

docs/getting-started/04-sharing-answers.md

docs/getting-started/start.md

docs/users-guide/02-database-basics.md

docs/users-guide/05-sharing-answers.md

docs/users-guide/07-data-model-reference.md

docs/users-guide/images/SaveButton.png