Remove manual http cookie management

Since docker uses cookiejar it doesn't need to manage cookies manually
anymore.
Managing cookie was duplicating it.

Docker-DCO-1.1-Signed-off-by: Fabio Falci <fabiofalci@gmail.com> (github: fabiofalci)
Move daemon config into sub pkg
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
Move image into sub pkg
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
Move graph and tags to graph sub pkg
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
Move runtime and container into sub pkg
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
Add IsRunning to server interface
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
Removing myself from doc maintainers due to other obligations eliminating time to maintain docs.

Docker-DCO-1.1-Signed-off-by: Andy Rothfusz <github@developersupport.net> (github: metalivedev)
Merge pull request #4559 from metalivedev/unmaintainer

Removing myself from doc maintainers
move a unit test file

Docker-DCO-1.1-Signed-off-by: Victor Vieux <victor.vieux@docker.com> (github: vieux)
Merge pull request #4560 from vieux/move_unit_test

move a unit test file
Merge pull request #4542 from fabiofalci/remove_manual_cookie

Remove manual http cookie management
Merge pull request #4538 from crosbymichael/move-runtime

Move runtime into sub package