add page_description and page_keywords md meta to mkdocs html template

Docker-DCO-1.1-Signed-off-by: Sven Dowideit <SvenDowideit@fosiki.com> (github: SvenDowideit)

(cherry picked from commit 8ae53ef167d684ed41fd9bd1a04f7a70a1ad20b6)
remove rst/sphinx documentation

Docker-DCO-1.1-Signed-off-by: Sven Dowideit <SvenDowideit@fosiki.com> (github: SvenDowideit)

(cherry picked from commit adf04681b4bd7293675b77b2397d87a5361b383b)
Improve code/comment/output markings & display consistency

This PR aims to increase the consistency across the docs for
code blocks and code/comment/output markings.

Rule followed here is "what's visible on the screen should be reflected"

Issue:

 - Docs had various code blocks showing: comments, commands & outputs.
 - All three of these items were inconsistently marked.

Some examples as to how this PR aims to introduce improvements:

1. Removed `> ` from in front of the "outputs". Eg,
`    > REPOSITORY                 TAG       ID              CREATED` replaced with:
`    REPOSITORY                 TAG       ID              CREATED`.

2. Introduced `$` for commands. Eg,
`    sudo chkconfig docker on` replaced with:
`    $ sudo chkconfig docker on`

3. Comments:
`    > # ` replaced with:
`    # `.

> Please note:
> Due to a vast amount of items reviewed and changed for this PR, there
> might be some individually incorrect replacements OR patterns of incorrect
> replacements. This PR needs to be reviewed and if there is anything missing,
> it should be improved or amended.

Closes:
https://github.com/dotcloud/docker/issues/5286

Docker-DCO-1.1-Signed-off-by: O.S. Tezer <ostezer@gmail.com> (github: ostezer)

(cherry picked from commit f87a97f7df838742a602f1984f4552b803e3f92d)

Docker-DCO-1.1-Signed-off-by: O.S.Tezer <ostezer@gmail.com> (github: SvenDowideit)
Bring back archived remote API versions

- git mv archived/* .
- put the links back into the summary document
- reduce the header depth by 1 so the TOC lists each API version
- update the mkdocs.yaml to render the archived API docs, but not add
  them to the menu/nav

Docker-DCO-1.1-Signed-off-by: Sven Dowideit <SvenDowideit@fosiki.com> (github: SvenDowideit)

(cherry picked from commit de49e7c0a640aada97ace458a4e5d63f5f52d4eb)

Conflicts:
	docs/sources/reference/api/docker_remote_api.md