Started update of DC walkthrough

I'm making the DC walkthrough more basic, showing only cf-sketch
interactive mode, and explaining more of the basic concepts at the
beginning. I've moved the original walkthrough, which I think still has
its place, to design-center-advaced.markdown, with the idea that it
contains the same steps, but showing the entire API interactions, for
more advanced users.

Not finished yet, more to come.
Fixed conflicts, added "More information" section.
Renamed advanced walkthrough.
Added more additional reference information.
Fixed formatting and links.
Fixed linking and titles
Move into Design Center.
Fix some formatting and meta data.
Fix code block and remove TODOs
Add version control manual
Moving into Writing Policy.
Editing.
Comment out some TODOs
Update output for looping examples
Editing and sorting.
Merge remote-tracking branch 'sigurd/fix/looping-output'
Add missing ReportType column.
Align compontent command references with man pages
Merge pull request #95 from sigurdteigen/master

Align compontent command references with man pages
Link documentation for components with relevant pages.