Move Server.ContainerAttach to Daemon.ContainerAttach

This is part of an effort to break apart the legacy server package. Help wanted!

Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
New job "log": logs a new event

Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
Move "pause" to daemon/pause.go

This is part of an effort to break apart the deprecated server/ package

Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
Move "unpause" to daemon/pause.go

This is part of an effort to break apart the deprecated server/ package

Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
Remove the restriction on multi-user PRs

This came up in #docker-dev today.  We're not sure exactly why the original restriction was put it place.  It is not well obeyed.  Please comment if you know the origin of the restriction.

Docker-DCO-1.1-Signed-off-by: Timothy Hobbs <timothyhobbs@seznam.cz> (github: timthelion)
Merge pull request #7344 from shykes/cleanup-server-attach

Move container-related jobs out of deprecated server/ package
Merge pull request #7354 from timthelion/patch-8

Remove the restriction on multi-user PRs
First pass at replacing parent-child metaphor to describe docker links.

Addresses issue #7141

Docker-DCO-1.1-Signed-off-by: Fred Lifton <fred.lifton@docker.com> (github: fredlf)

a little git by
Docker-DCO-1.1-Signed-off-by: Fred Lifton <fred.lifton@docker.com> (github: SvenDowideit)
Merge pull request #7361 from SvenDowideit/merge-edit_dockerlinks

First pass at replacing parent-child metaphor to describe docker links.
Fix getImagesJSON output for api less than 1.7

Tag can be a number, like centos:6.4, and so must be handled like a
string otherwise will lose quotation marks when converting to json
and the client (API < 1.7) will try to convert to int, failing
because the type is string. Additionally using ParseRepositoryTag to
parse repository names to split the tag because an URL can have : and
so more than one occurrence of : can be found on repository names.

Docker-DCO-1.1-Signed-off-by: Fabio Falci <fabiofalci@gmail.com> (github: fabiofalci)
Update package for repo and tag parser
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@docker.com> (github: crosbymichael)
Merge pull request #7362 from crosbymichael/fix-get-image-json

Fix get image json