Doc and wiki reorg

[ViralBShah]

Doc stuff should perhaps move to the wiki, wherever it makes sense. Some of the stuff is notes, and then there is the manual as well.

[StefanKarpinski]

I like how in commits I'm the only one who capitalizes the subject line and here I'm the only one who doesn't ;-)

[StefanKarpinski]

I'm currently working on this. Have done the very beginning of porting the manual to the wiki.