Reorganize all the files.
Fix internal links.
Remove references to useless pages and duplicate search link.
Remove irrelevant comment.
Update titles.
Another new title.
Merge remote-tracking branch 'refs/remotes/origin/master' into docs-reorg-419
Update links to new location.
Merge remote-tracking branch 'refs/remotes/origin/master' into docs-reorg-419
Disable stupid caching that breaks every time you change branches.
Merge pull request #439 from ClusterHQ/docs-reorg-419

Docs reorg.

Fixes #419.