Additions for 1.4.1 release

Docker-DCO-1.1-Signed-off-by: Fred Lifton <fred.lifton@docker.com> (github: fredlf)
Merge pull request #9703 from fredlf/1.4.1-docs-update

Additions for 1.4.1 release
Closes #9311 Handles container id/name collisions against daemon functionalities according to #8069

Signed-off-by: Andrew C. Bodine <acbodine@us.ibm.com>